Question

According to the periodic table, how many electrons does gallium (#31) have in its valence level?

3
13
31
2

Answer 1

it would have three valance electrons

Answer 2

Option A: 3

The atomic number of gallium atom is 31. It belongs to 13th group and 4th period of the periodic table.

The electronic configuration is as follows:

`[Ar]3d^(10)4s^(2)4p^(1)`

Here, Ar is the nearest noble gas.

The outermost electronic shells are
`4s^(2)4p^(1).`

From the electronic configuration, valence electrons of gallium are 3.