No. Bromine is a nonmetal, classified as a halogen on the periodic table.

How many protons does bromine have?

Bromine has 35 protons. Its atomic number is 35, which is also the number of electrons in a neutral atom of bromine.

What group and period is bromine in?

Bromine is in group 17 and period 4 of the periodic table, in the p-block.

What is the atomic mass of bromine?

The atomic mass of bromine is 79.904 u (unified atomic mass units).

Element 35

Bromine (Br)

Halogen · Period 4 · Group 17 · p-block

Bromine (Br) is element 35 of the periodic table, a halogen in period 4, group 17 (p-block) with an atomic mass of 79.904 and is a liquid at standard conditions.

At a glance

Atomic number: 35
Symbol: Br
Atomic mass: 79.904 u
Category: Halogens
Period: 4
Group: 17
Block: p-block
Phase at STP: liquid

Electron structure

Electron configuration: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p5
Shorthand configuration: [Ar] 3d10 4s2 4p5
Electrons per shell: 2, 8, 18, 7
Oxidation states: -1, +1, +3, +4, +5, +7

Physical properties

Melting point: 265.8 K (-7.35 °C)
Boiling point: 332 K (58.85 °C)
Density: 3.122 g/cm³
Phase: liquid

Atomic properties

Electronegativity (Pauling): 2.96
Atomic radius: 94 pm
Covalent radius: 120 pm
Van der Waals radius: 185 pm
First ionization energy: 1140 kJ/mol
Electron affinity: 325 kJ/mol

Notable isotopes

Notable isotopes of Bromine: mass number, atomic mass, natural abundance, and stability.
Isotope	Mass	Abundance	Stability
Br-79	78.91834	50.69%	Stable

Common uses

Flame retardants
Pesticides
Water purification
Photography

Discovery

Year: 1826
Discovered by: Antoine Jérôme Balard
Country: France

Frequently asked questions

Is bromine a metal?: No. Bromine is a nonmetal, classified as a halogen on the periodic table.
How many protons does bromine have?: Bromine has 35 protons. Its atomic number is 35, which is also the number of electrons in a neutral atom of bromine.
What group and period is bromine in?: Bromine is in group 17 and period 4 of the periodic table, in the p-block.
What is the atomic mass of bromine?: The atomic mass of bromine is 79.904 u (unified atomic mass units).

Keep exploring

Bromine's row is on the printable element property sheet, and its tile is on the periodic table wall chart - the same numbers as above, laid out for A4 or A3 paper.