Question

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

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.