List of elements by density

This is a list of the chemical elements, sorted by density measured at standard temperature and pressure. (The first elements from hydrogen to radon are gases at normal room temperatures.)

Name	Symbol	Density (g/cm³)	Atomic number	Description/Mohs' hardness	Color	Notes
Hydrogen	H	Template:Sort	1	gas		diatomic
Helium	He	Template:Sort	2	noble gas	100px	lowest boiling and melting points of any element
Neon	Ne	Template:Sort	10	noble gas	100px
Nitrogen	N	Template:Sort	7	gas		diatomic
Oxygen	O	Template:Sort	8	gas		diatomic
Fluorine	F	Template:Sort	9	halogen gas	yellow-green or yellowish brown
Argon	Ar	Template:Sort	18	noble gas	100px
Chlorine	Cl	Template:Sort	17	halogen gas	yellowish green or greenish yellow
Krypton	Kr	Template:Sort	36	noble gas	100px	forms compounds with fluorine and clathrates with water
Xenon	Xe	Template:Sort	54	noble gas	100px
Radon	Rn	Template:Sort	86	noble gas		radioactive, comes from radium
Lithium	Li	Template:Sort	3	0.6	silvery white/gray	used in batteries
Potassium	K	Template:Sort	19	0.4	silvery white	forms many compounds
Sodium	Na	Template:Sort	11	0.5	100px waxy, silvery white	burns with a yellow flame, reacts violently with water, and oxidizes in air necessitating storage in an inert environment
Rubidium	Rb	Template:Sort	37	0.3	100px silvery-white	low melting point, reacts violently with water like sodium
Calcium	Ca	Template:Sort	20	1.75	gray
Magnesium	Mg	Template:Sort	12	2.5	silvery metallic	is very brittle, flammable
Phosphorus	P	Template:Sort	15	nonmetal	waxy white/ red/ black/ colorless	Due to its high reactivity, it is never found as a free element in nature.
Beryllium	Be	Template:Sort	4	5.5	100px gray metallic	brittle
Francium	Fr	Template:Sort	87	radioactive alkali metal		alkali metal isotope found in uranium and thorium ores
Cesium	Cs	Template:Sort	55	0.2	100px silvery gold	liquid at or near room temperature, very reactive
Sulfur	S	Template:Sort	16	2.0	lemon yellow
Carbon	C	Template:Sort	6	10.0 (diamond)	colorless
Carbon	C	Template:Sort	6	1-2 (graphite)	black
Silicon	Si	Template:Sort	14	6.5 metalloid	100px dark gray, bluish tinge
Boron	B	Template:Sort	5	9.3	100px black/brown/ amorphous boron is a brown powder, metallic boron is black	The metallic form is hard (9.3 on Mohs' scale) and a poor conductor at room temperature.
Strontium	Sr	Template:Sort	38	1.5	100px a soft silver-white or yellowish metallic element	The metal turns yellow when exposed to air. somewhat malleable. It is chiefly employed (as in the nitrate) to color pyrotechnic flames red.
Aluminium	Al	Template:Sort	13	2.75	silvery	non-magnetic, very reflective
Scandium	Sc	Template:Sort	21	transition metal	100px soft, silvery, develops a slightly yellowish or pinkish cast when exposed to air	not attacked by a 1:1 mixture of nitric acid(HNO3) and 48% HF
Bromine	Br	Template:Sort	35	halogen	100px gas/liquid: red-brown solid: metallic luster	a red volatile liquid at standard room temperature. This element is corrosive to human tissue
Barium	Ba	Template:Sort	56	1.25	metallic	Naturally occurring barium is a mix of seven stable isotopes. There are twenty-two isotopes known, but most of these are highly radioactive and have half-lives in the several millisecond to several minute range. The only notable exceptions are 133Ba which has a half-life of 10.51 years, and 137mBa (2.6 minutes).
Yttrium	Y	Template:Sort	39	transition metal	100px silvery metallic	two of its compounds are used to make the red color phosphors in cathode ray tube displays
Titanium	Ti	Template:Sort	22	6.0	100px silvery metallic	corrosion-resistant (including resistance to sea water and chlorine, high tensile strength
Selenium	Se	Template:Sort	34	2.0	gray, metallic luster	Selenium has at least 29 isotopes, of which 5 are stable, and 6 are nuclear isomers.
Iodine	I	Template:Sort	53	halogen solid that sublimes at standard temperatures into a purple-pink gas that has an irritating odor	100px violet-dark gray, lustrous	least reactive of the halogens
Europium	Eu	Template:Sort	63	lanthanide	100px
Germanium	Ge	Template:Sort	32	6.0	100px
Radium	Ra	Template:Sort	88		almost pure white, readily oxidizes on exposure to air, turning black	Radium preparations are remarkable for maintaining themselves at a higher temperature than their surroundings, and for their radiations: alpha particles, beta particles, and gamma rays. Radium also produces neutrons when mixed with beryllium.
Arsenic	As	Template:Sort	33	3.5	metallic gray, allotropic forms; yellow, black and grey	poisonous
Gallium	Ga	Template:Sort	31	1.5	100px	melts at 29.7 degrees Celsius (just above room temperature)
Vanadium	V	Template:Sort	23	7.0	100px
Lanthanum	La	Template:Sort	57	2.5	100px
Tellurium	Te	Template:Sort	52	2.25	100px silvery lustrous gray
Zirconium	Zr	Template:Sort	40	5.0	100px
Antimony	Sb	Template:Sort	51	3.0	100px silvery lustrous grey	toxic
Cerium	Ce	Template:Sort	58	2.5	100px resembles iron
Praseodymium	Pr	Template:Sort	59	soft	silvery white, yellowish tinge
Ytterbium	Yb	Template:Sort	70
Astatine	At	Template:Sort	85
Neodymium	Nd	Template:Sort	60			used in powerful permanent magnets
Zinc	Zn	Template:Sort	30	2.5
Chromium	Cr	Template:Sort	24	8.5
Promethium	Pm	Template:Sort	61
Tin	Sn	Template:Sort	50	1.5 soft metal
Indium	In	Template:Sort	49	soft metal
Manganese	Mn	Template:Sort	25	6.0
Samarium	Sm	Template:Sort	62
Iron	Fe	Template:Sort	26	metal
Gadolinium	Gd	Template:Sort	64
Terbium	Tb	Template:Sort	65
Dysprosium	Dy	Template:Sort	66
Niobium	Nb	Template:Sort	41
Cadmium	Cd	Template:Sort	48
Holmium	Ho	Template:Sort	67
Cobalt	Co	Template:Sort	27
Nickel	Ni	Template:Sort	28
Copper	Cu	Template:Sort	29
Erbium	Er	Template:Sort	68
Polonium	Po	Template:Sort	84
Ununhexium	Uuh	Template:Sort	116
Thulium	Tm	Template:Sort	69
Bismuth	Bi	Template:Sort	83
Ununpentium	Uup	Template:Sort	115
Lutetium	Lu	Template:Sort	71
Lawrencium	Lr	Template:Sort	103
Actinium	Ac	Template:Sort	89		radioactive metallic element. glows in the dark with an eerie blue light.
Molybdenum	Mo	Template:Sort	42
Silver	Ag	Template:Sort	47
Lead	Pb	Template:Sort	82
Ununquadium	Uuq	Template:Sort	114
Technetium	Tc	Template:Sort	43
Thorium	Th	Template:Sort	90
Thallium	Tl	Template:Sort	81
Ununtrium	Uut	Template:Sort	113
Palladium	Pd	Template:Sort	46
Ruthenium	Ru	Template:Sort	44
Rhodium	Rh	Template:Sort	45
Hafnium	Hf	Template:Sort	72
Einsteinium	Es	Template:Sort	99
Curium	Cm	Template:Sort	96
Mercury	Hg	Template:Sort	80
Ununbium	Uub	Template:Sort	112
Americium	Am	Template:Sort	95
Berkelium	Bk	Template:Sort	97
Californium	Cf	Template:Sort	98
Protactinium	Pa	Template:Sort	91
Tantalum	Ta	Template:Sort	73
Rutherfordium	Rf	Template:Sort	104
Uranium	U	Template:Sort	92
Tungsten	W	Template:Sort	74
Gold	Au	Template:Sort	79
Roentgenium	Rg	Template:Sort	111
Plutonium	Pu	Template:Sort	94
Neptunium	Np	Template:Sort	93
Rhenium	Re	Template:Sort	75
Platinum	Pt	Template:Sort	78
Darmstadtium	Ds	Template:Sort	110
Osmium	Os	Template:Sort	76
Iridium	Ir	Template:Sort	77
Seaborgium	Sg	Template:Sort	106
Meitnerium	Mt	Template:Sort	109
Bohrium	Bh	Template:Sort	107
Dubnium	Db	Template:Sort	105
Hassium	Hs	Template:Sort	108
Fermium	Fm	Template:Sort	100
Mendelevium	Md	Template:Sort	101
Nobelium	No	Template:Sort	102
Ununoctium	Uuo	Template:Sort	118

ar:قائمة عناصر (كثافة)