According to the periodic table, how many electrons does gallium (#31) have in its valence level? 3 13 31 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:

Here, Ar is the nearest noble gas.

The outermost electronic shells are

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

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.

its b it was a compound