Question

Give the number of electrons in the species H+2 , H2 and O+2.

Answer 1

H+2 :Number of electrons present in hydrogen molecule (H2) = 1 + 1 = 2
∴ Number of electrons in = 2 $\times$1 = 1
H2: Number of electrons in H2 = 1 + 1 = 2
O+2 : Number of electrons present in oxygen molecule (O2) = 8 + 8 = 16
∴ Number of electrons in O+2 = 16-1 = 15