80 Hg

Transition metal

Mercury

Only metal liquid at room temp.

See it in the interactive periodic table

Properties of Mercury

Atomic number (Z)
80
Symbol
Hg
Atomic mass
200.59 g/mol
Category
Transition metal
Group
12
Period
6
Electron configuration
[Xe] 4f¹⁴ 5d¹⁰ 6s²
Electronegativity (Pauling)
2
Atomic radius
171 pm
First ionization energy
1007 kJ/mol
Melting point
234.32 K (-38.8 °C)
Boiling point
629.88 K (356.7 °C)
Density
13.5336 g/cm³
Phase at 25 °C
Liquid
Discovered
Known since ancient times

Frequently asked questions

What is Mercury?

Mercury (Hg) is a transition metal, element number 80 on the periodic table. Only metal liquid at room temp.

What is the atomic number and atomic mass of Mercury?

Mercury has atomic number 80 and an atomic mass of about 200.59 g/mol.

What is the electron configuration of Mercury?

The electron configuration of Mercury is [Xe] 4f¹⁴ 5d¹⁰ 6s².

Where is Mercury on the periodic table?

Mercury sits in group 12, period 6, and is classified as a transition metal.

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