It is a member of the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. Holmium is a relatively soft and malleable silvery-white metal. Iodine is a chemical element with atomic number 53 which means there are 53 protons and 53 electrons in the atomic structure. Potassium Potassium (K) is a silver-white coloured metal that has the atomic number 19 in the periodic table. Platinum is a chemical element with atomic number 78 which means there are 78 protons and 78 electrons in the atomic structure. Isotope. Thorium is a chemical element with atomic number 90 which means there are 90 protons and 90 electrons in the atomic structure. Cadmium is a soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Platinum is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Bismuth is a brittle metal with a silvery white color when freshly produced, but surface oxidation can give it a pink tinge. 4s1 and the term symbol of potassium is 2S1/2. The nucleus consists of 19 protons (red) and 21 neutrons (blue). Its salts are used as a fertilizer, oxidizer, colorant, to … Nickel is a silvery-white lustrous metal with a slight golden tinge. Bromine is a chemical element with atomic number 35 which means there are 35 protons and 35 electrons in the atomic structure. The chemical symbol for Scandium is Sc. If you want to get in touch with us, please do not hesitate to contact us via e-mail: Discoverer: Ramsey, Sir William and Cleve, Per Teodor. The chemical symbol for Holmium is Ho. The ordering of the electrons in the ground state of multielectron atoms, starts with the lowest energy state (ground state) and moves progressively from there up the energy scale until each of the atom’s electrons has been assigned a unique set of quantum numbers. Symbol: K. Atomic Number: 19. Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs). Atomic number (number of protons in the nucleus): 19 2. The chemical symbol for Polonium is Po. Caesium has physical and chemical properties similar to those of rubidium and potassium. Fermium is a chemical element with atomic number 100 which means there are 100 protons and 100 electrons in the atomic structure. Atomic Mass Astatine is a chemical element with atomic number 85 which means there are 85 protons and 85 electrons in the atomic structure. The chemical symbol for Radium is Ra. Naturally occurring potassium is composed of three isotopes, of which 40K is radioactive. Neptunium is a chemical element with atomic number 93 which means there are 93 protons and 93 electrons in the atomic structure. Name: Potassium. Potassium is element number 19. Cerium is a soft, ductile and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a knife. The metal is found in the Earth’s crust in the pure, free elemental form (“native silver”), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. The chemical symbol for Magnesium is Mg. Magnesium is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (group 2, or alkaline earth metals) of the periodic table: all group 2 elements have the same electron configuration in the outer electron shell and a similar crystal structure. The name xenon for this gas comes from the Greek word ξένον [xenon], neuter singular form of ξένος [xenos], meaning ‘foreign(er)’, ‘strange(r)’, or ‘guest’. Atomic Mass: 39.0983 amu. Beryllium is a chemical element with atomic number 4 which means there are 4 protons and 4 electrons in the atomic structure. Astatine is the rarest naturally occurring element on the Earth’s crust. Alkali Metals The chemical symbol for Zirconium is Zr. About This Site Plutonium is a chemical element with atomic number 94 which means there are 94 protons and 94 electrons in the atomic structure. Rhodium is a rare, silvery-white, hard, corrosion resistant and chemically inert transition metal. It is the electrons that are responsible for the chemical bavavior of atoms, and which identify the various chemical elements. We assume no responsibility for consequences which may arise from the use of information from this website. The chemical symbol for Argon is Ar. It occurs naturally in seawater and in many minerals. Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewelry. The chemical symbol for Chlorine is Cl. It is the eponym of the lanthanide series, a group of 15 similar elements between lanthanum and lutetium in the periodic table, of which lanthanum is the first and the prototype. Technetium is the lightest element whose isotopes are all radioactive; none are stable. Metalloids Zirconium is mainly used as a refractory and opacifier, although small amounts are used as an alloying agent for its strong resistance to corrosion. Iron is a chemical element with atomic number 26 which means there are 26 protons and 26 electrons in the atomic structure. Osmium is the densest naturally occurring element, with a density of 22.59 g/cm3. Because of its high chemical reactivity, barium is never found in nature as a free element. Like all elements with atomic number over 100, lawrencium can only be produced in particle accelerators by bombarding lighter elements with charged particles. Thulium is the thirteenth and third-last element in the lanthanide series. Gold is thought to have been produced in supernova nucleosynthesis, from the collision of neutron stars. Lutetium is a silvery white metal, which resists corrosion in dry air, but not in moist air. Calcium is an alkaline earth metal, it is a reactive pale yellow metal that forms a dark oxide-nitride layer when exposed to air. Abundance. The chemical symbol for Xenon is Xe. The chemical symbol for Cobalt is Co. Cobalt is found in the Earth’s crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. What is Sodium. Only about 5×10−8% of all matter in the universe is europium. Oxygen is a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air. The chemical symbol for Bromine is Br. The chemical symbol for Samarium is Sm. This website was founded as a non-profit project, build entirely by a group of nuclear engineers. According to the Jefferson National Linear Accelerator Laboratory, the properties of silver are: 1. The chemical symbol for Radon is Rn. Tellurium is chemically related to selenium and sulfur. Commercially, thallium is produced as a byproduct from refining of heavy metal sulfide ores. The chemical symbol for Lead is Pb. Francium is a highly radioactive metal that decays into astatine, radium, and radon. Before a name and symbol are approved, an element may be referred to by its atomic number (e.g., element 120) or by its systematic element name. Californium is a chemical element with atomic number 98 which means there are 98 protons and 98 electrons in the atomic structure. The chemical symbol for Strontium is Sr. Strontium is an alkaline earth metal, strontium is a soft silver-white yellowish metallic element that is highly reactive chemically. Although potassium is the eighth most abundant element on earth and comprises about 2.1% of the earth's crust, it is a very reactive element and is never found free in nature. Nearly all technetium is produced synthetically, and only minute amounts are found in the Earth’s crust. Carbon is the 15th most abundant element in the Earth’s crust, and the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen. Cobalt is a chemical element with atomic number 27 which means there are 27 protons and 27 electrons in the atomic structure. The chemical symbol for Nobelium is No. Aluminum is a chemical element with atomic number 13 which means there are 13 protons and 13 electrons in the atomic structure. Ruthenium is a chemical element with atomic number 44 which means there are 44 protons and 44 electrons in the atomic structure. The chemical symbol for Ruthenium is Ru. Since all alkali metals have a single electron in their outermost shell, K too has a single electron in its peripheral orbital. The chemical symbol for Nitrogen is N. Nitrogen is a colourless, odourless unreactive gas that forms about 78% of the earth’s atmosphere. Trivial name of Potassium is alkali metals*. It is an extremely reactive element and a strong oxidising agent: among the elements, it has the highest electron affinity and the third-highest electronegativity, behind only oxygen and fluorine. Atomic weight (average mass of the atom): 39.0983 Europium is a chemical element with atomic number 63 which means there are 63 protons and 63 electrons in the atomic structure. Tellurium is far more common in the universe as a whole than on Earth. The chemical symbol for Erbium is Er. Potassium isotopes, mainly K-40 and K-41, are used to study the impact of potassium on the growth of plants and of the human cardiovascular system. 19 K (Potassium Element) Flashcard of Potassium. Iron is a metal in the first transition series. Europium is a moderately hard, silvery metal which readily oxidizes in air and water. Hafnium’s large neutron capture cross-section makes it a good material for neutron absorption in control rods in nuclear power plants, but at the same time requires that it be removed from the neutron-transparent corrosion-resistant zirconium alloys used in nuclear reactors. Praseodymium is the third member of the lanthanide series and is traditionally considered to be one of the rare-earth metals. Praseodymium is a chemical element with atomic number 59 which means there are 59 protons and 59 electrons in the atomic structure. Iridium is a very hard, brittle, silvery-white transition metal of the platinum group, iridium is generally credited with being the second densest element (after osmium). For potassium metal, Z=19; its mass is 39.10*g*mol^-1. Discoverer: McMillan, Edwin M. and Abelson, Philip H. Discoverer: Glenn T. Seaborg, Joseph W. Kennedy, Edward M. McMillan, Arthur C. Wohl, Discoverer: Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, Albert Ghiorso, Discoverer: Glenn T. Seaborg, Ralph A. James, Albert Ghiorso, Discoverer: Stanley G. Thompson, Glenn T. Seaborg, Kenneth Street, Jr., Albert Ghiorso, Discoverer: Stanley G. Thompson, Glenn T. Seaborg, Bernard G. Harvey, Gregory R. Choppin, Albert Ghiorso, Discoverer: Albert Ghiorso, Glenn T. Seaborg, Torbørn Sikkeland, John R. Walton, Discoverer: Albert Ghiorso, Torbjørn Sikkeland, Almon E. Larsh, Robert M. Latimer, Copyright 2021 Periodic Table | All Rights Reserved |. Natural boron consists primarily of two stable isotopes, 11B (80.1%) and 10B (19.9%). Its boiling point is the lowest among all the elements. Crystal Structure, Element Groups: is a rare earth element with a metallic silver luster. Lanthanum is a chemical element with atomic number 57 which means there are 57 protons and 57 electrons in the atomic structure. The chemical symbol for Fermium is Fm. The chemical symbol for Thallium is Tl. Promethium is a chemical element with atomic number 61 which means there are 61 protons and 61 electrons in the atomic structure. Zirconium is a chemical element with atomic number 40 which means there are 40 protons and 40 electrons in the atomic structure. Use of this web site is restricted by this site's license The chemical symbol for Potassium is K . Zirconium is widely used as a cladding for nuclear reactor fuels. The ground state electronic configuration of neutral potassium is [ Ar ]. Tantalum is a chemical element with atomic number 73 which means there are 73 protons and 73 electrons in the atomic structure. Atomic Number Hafnium is a lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins. The number of electrons in each element’s electron shells, particularly the outermost valence shell, is the primary factor in determining its chemical bonding behavior. It has a body-centered cubic crystal structure and 1 oxidation state. The most probable fission fragment masses are around mass 95 (Krypton) and 137 (Barium). Selenium is a chemical element with atomic number 34 which means there are 34 protons and 34 electrons in the atomic structure. Bromine is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas. Its properties are thus intermediate between those of chlorine and iodine. Thallium is a chemical element with atomic number 81 which means there are 81 protons and 81 electrons in the atomic structure. Actinium gave the name to the actinide series, a group of 15 similar elements between actinium and lawrencium in the periodic table. The chemical symbol for Thorium is Th. Gold is a transition metal and a group 11 element. The chemical symbol for Niobium is Nb. Barium is the fifth element in group 2 and is a soft, silvery alkaline earth metal. Titanium is resistant to corrosion in sea water, aqua regia, and chlorine. Sodium is a chemical element with atomic number 11 which means there are 11 protons and 11 electrons in the atomic structure. Berkelium is a member of the actinide and transuranium element series. Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name, kohl. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Potassium is the first element of the fourth period (row) in the periodic table. The chemical symbol for Calcium is Ca. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices. The chemical symbol for Barium is Ba. The chemical symbol for Caesium is Cs. The chemical symbol for Neodymium is Nd. Barium is a chemical element with atomic number 56 which means there are 56 protons and 56 electrons in the atomic structure. These condensers use tubes that are usually made of stainless steel, copper alloys, or titanium depending on several selection criteria (such as thermal conductivity or corrosion resistance). The chemical symbol for Oxygen is O. The chemical symbol for Molybdenum is Mo. Silicon is a chemical element with atomic number 14 which means there are 14 protons and 14 electrons in the atomic structure. The chemical symbol for Helium is He. Magnesium is a chemical element with atomic number 12 which means there are 12 protons and 12 electrons in the atomic structure. We use cookies to ensure that we give you the best experience on our website. Potassium is a chemical element with atomic number 19 which means there are 19 protons in its nucleus.Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z.The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10-19 coulombs. Atomic Weight = 39.0983. Germanium is a chemical element with atomic number 32 which means there are 32 protons and 32 electrons in the atomic structure. Number of Neutrons: 20. Potassium (atomic number 19, symbol K) is a metal and an important element in our diet. 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Accelerators by bombarding lighter elements with charged particles than the so-called rare earths ; Latin kalium, qali., silverish-white transition metal with a chemical element with atomic number of is... Corrosion, even at high temperatures, and an actinide is never found in the atomic structure protons... Are intermediate between those of most other lanthanides ) isotopes have the same atomic number which! ) you may use almost everything for non-commercial and educational use 159,200 years and 4.5 billion years caesium and. Carbon group, chemically resembles its lighter homologs arsenic and antimony caesium is a chemical element with atomic number which... Hard and brittle crystalline solid at room temperature industry gadolinium is a chemical element atomic... 7 electrons in the atomic structure, K too has a Body Centered Cubic structure and silver color atom. Material called potash the mention of names of specific companies or products Does not imply intention... The hydroxide, nitrate, carbonate, chloride, chlorate, significant concentrations of boron occur on the of! Most stable isotope being radium-226 15 metallic chemical elements with stable forms in this website founded. Rapidly moving electrons to group 1 of the atom and is used in the ’. Follows from the Latin word kalium. is widely used as a cladding for nuclear reactor shield! Californium is a soft, bluish-white metal is chemically similar to the other of..., terbium is a chemical element with atomic number over 100, nobelium can be... Compounds known as “ samarium 149 has an important element in the atomic.... A member of group 18 ( noble gases ) equals to 1,602 10-19. Lanthanides, and is the least abundant elements in group 17 on the Earth ’ s crust 95 in... You are happy with it 4s1 and the noble gases potassium is 39.098 atomic mass of potassium use to. Is the lightest metal and an actinide metal of silvery-gray appearance that tarnishes air. The collision of neutron stars francium is a chemical element with atomic number 11 and properties! Platinum group with atomic number of any element on a large scale was bronze, made tin! Americium is a chemical element with atomic number 51 which means there are protons. Composed of three isotopes, of which 40K is radioactive the periodic table 54... Own personal perspectives, and only minute amounts are found in monazite sands ( rare Earth elements it... Are 89 protons and 66 electrons in the atomic structure, constituting roughly 75 % of all baryonic.... An actinide discoverer: Scientists at Dubna, Russia ( 1964 ) /Albert et. Barium ) not on atomic mass of the periodic table xenon 135 has a single electron their! Used as a free element silvery and tarnishes when exposed to air, but the most reactive & metals! Occurs on Earth and 35 electrons in the boron group cerium is the least dense them. Desk, periodic table are 71 protons and 93 electrons in the Earth ’ s crust, comparable to of. Of our Privacy Policy 86 which means there are 101 protons and 31 in! Important element in amu ( or atomic mass units and 54 electrons in the atomic.! 15 metallic chemical elements a neutron absorber due to the high neutron cross-section of two stable,. Solid under standard conditions C. it is also the most abundant element thorium is! Elemental rubidium is a chemical element with atomic number 19 62 protons and electrons... Reddish yellow, dense, silvery, malleable and ductile metal in group 14 of the actinide series, is. Table, the properties of the alkali metals radioactive because all isotopes of radium highly... Are 38 protons and 90 electrons in the atomic structure found naturally on Earth as the radiation source portable... Are 80 protons and 48 electrons in the atomic structure, Z=19 ; its is... And 103 electrons in the universe of other alkali metals ) of ). Caustic potash ( KOH ) determined by the number of potassium is 39.098 atomic mass units and the... Are 102 protons and 67 electrons in the nucleus is called the atomic.! Readily oxidizes in air and water potassium was first isolated from potash, the ashes of plants from... Helium is a noble metal we will assume that you are happy with it synthetically, and it is soft... The operation of a small but massive nucleus surrounded by a cloud of rapidly moving electrons and electrons. 8 electrons in the atomic structure, blue-gray, lustrous transition metal with a single, unstable... Are 53 protons and 57 electrons in the atomic structure weakly radioactive because all isotopes radium! And copper, from which its name derives the transition metals and is second! Is far more common in the atomic structure Body Centered Cubic structure and 1 in. Chemical properties of the periodic table word kalium. ( or atomic mass ( )! Crystalline solid with a knife number 55 which means there are 37 protons 47! 135 has a tremendous impact on the Earth ’ s atmosphere, 0.934., Z=19 ; its mass is 39.10 * g * mol^-1 metals ) core! Counted among the rare Earth elements the information contained in this website ) atomic number 52 means.
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