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Compare elements

Put two to four elements side by side. The highest and lowest value in each row are marked.

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HighestLowestin each row

Comparison of Iron, Copper, Silver, Gold
	26FeIron	29CuCopper	47AgSilver	79AuGold
Category	Transition metal	Transition metal	Transition metal	Transition metal
Position	Group 8 · Period 4 · d-block	Group 11 · Period 4 · d-block	Group 11 · Period 5 · d-block	Group 11 · Period 6 · d-block
State at 25 °C	Solid	Solid	Solid	Solid
Atomic mass	55.845 uLowest	63.546 u	107.870 u	196.970 uHighest
Electronegativity	1.83Lowest	1.90	1.93	2.54Highest
First ionization energy	762.5 kJ/mol	745.5 kJ/mol	731.0 kJ/molLowest	890.1 kJ/molHighest
Electron affinity	15.7 kJ/molLowest	118.5 kJ/mol	125.6 kJ/mol	222.8 kJ/molHighest
Atomic radius	140 pm	135 pmLowest	160 pmHighest	135 pmLowest
Covalent radius	142 pm	132 pmLowest	145 pmHighest	136 pm
Density	7.874 g/cm³Lowest	8.933 g/cm³	10.501 g/cm³	19.282 g/cm³Highest
Melting point	1,811.0 KHighest	1,357.8 K	1,234.9 KLowest	1,337.3 K
Boiling point	3,134.0 KHighest	2,835.0 K	2,435.0 KLowest	3,129.0 K
Electron configuration	[Ar] 3d⁶ 4s²	[Ar] 3d¹⁰ 4s¹	[Kr] 4d¹⁰ 5s¹	[Xe] 4f¹⁴ 5d¹⁰ 6s¹
Valency	2, 3	2	1	3
Common oxidation states	+2, +3	+2	+1	+3
Discovered	Known since antiquity	Known since antiquity	Known since antiquity	Known since antiquity
Atomic model
Main uses	Not written yet	Not written yet	Not written yet	Not written yet