How many electrons does boron have?

Oct 13, 2016

Boron atomic number 5 has five electrons in its ground state.
Commonly Boron will lose 3 electrons leaving 2 electrons in its most common ionic form.

Explanation:

The atomic number gives the number of protons. Protons which have a positive charge are balanced by an equal number of electrons in a neutral atom.

Boron number 5 has five protons and therefore as a neutral atom also has five electrons.

Boron has an electron configuration of $1 {s}^{2} 2 {s}^{2} 2 {p}^{1}$

The most stable electron configuration for Boron is

$1 {s}^{2}$ + 3 charge. By losing three electrons Boron can achieve the stable electron structure of Helium

Nov 3, 2016

Boron has five electrons.

Explanation:

Boron is element number 5 in the Periodic Table.

That means it contains five protons and five electrons.

They are arranged with two electrons in the first energy shell and three in the second.

A chemist would say that the electron configuration of boron is

$\text{1s"^2 "2s"^2 "2p}$