Ions: Electron Configuration

Question

Write the complete electron configuration for the common monatomic ion formed by the element bromine, Br.

This ion is a(n) _______cationanion with a charge of____?

Answer 1

Bromine (Br) has atomic number 35.

It is in period 4, group 17.

It is a p-block element.

Electron configuration for the neutral bromine atom is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁵

Electron configuration for bromine monotomic ion is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ (gained an electron)

This ion is an anion with a charge of -1