chemical element
species of atoms having the same number of protons in the atomic nucleus and the same chemical properties, but not necessarily the same mass, or the same stability (or half-lifetime if they are unstable)
hydrogen
chemical element with symbol H and atomic number 1
chlorine
chemical element with symbol Cl and atomic number 17
titanium
chemical element with symbol Ti and atomic number 22
vanadium
chemical element with symbol V and atomic number 23
platinum
chemical element with symbol Pt and atomic number 78
antimony
chemical element with symbol Sb and atomic number of 51
meitnerium
chemical element with atomic number 109 and symbol Mt
gadolinium
element with the atomic number of 64
mineral
chemical element required as an essential nutrient by organisms to perform functions necessary for life
aluminium
metallic chemical element of silvery appearance with symbol Al and atomic number 13
magnesium
chemical element, symbol Mg and atomic number 12
francium
chemical element with symbol Fr and atomic number 87
calcium
chemical element with symbol Ca and atomic number 20
manganese
chemical element, symbol Mn and atomic number 25
niobium
chemical element with symbol Nb and atomic number 41
molybdenum
chemical element with symbol Mo and atomic number 42
palladium
chemical element with symbol Pd and atomic number 46
hassium
chemical element with the atomic number of 108
promethium
chemical element with the atomic number of 61
mendelevium
chemical element with the atomic number of 101 and symbol Md
actinide
f-block chemical elements
metalloid
chemical element with properties of both metals and nonmetals
halogens
group of chemical elements in column 17 of the periodic table
trace element
chemical element whose concentration (or other measure of amount) is very low
main group
set of chemical elements in the s- and p-blocks
iron
chemical element with symbol Fe and atomic number 26
argon
chemical element with symbol Ar and atomic number 18; rare gas
tungsten
chemical element with symbol W and atomic number 74
copper
chemical element with symbol Cu and atomic number 29
germanium
chemical element with symbol Ge and atomic number 32
bromine
chemical element with symbol Br and atomic number 35
krypton
chemical element with symbol Kr and atomic number 36; rare gas
zirconium
chemical element with symbol Zr and atomic number 40
ruthenium
chemical element with symbol Ru and atomic number 44
indium
chemical element with symbol In and atomic number 49
cadmium
chemical element with symbol Cd and atomic number of 48
plutonium
radioactive chemical element with the atomic number of 94 and symbol Pu
neptunium
chemical element with the atomic number of 93 and symbol Np
rutherfordium
chemical element with the atomic number of 104
neodymium
chemical element with the atomic number of 60 and symbol Nd
thulium
chemical element with the atomic number of 69
erbium
chemical element with atomic number 68
lutetium
element with the atomic number of 71
einsteinium
chemical element with the atomic number of 99
heavy metal
loosely defined subset of elements that exhibit metallic properties
rare earth element
any of the fifteen lanthanides plus scandium and yttrium
radioactive element
element undergoing radioactive decay
helium
chemical element with symbol He and atomic number 2; rare gas
oxygen
chemical element with symbol O and atomic number 8