The atomic number of Al and Cl are 13 and 17, respectively. What will be the number of electrons in Al3+ and Cl-?

Atomic number of Al = Number of electrons = 13

Number of electrons in Al³⁺ = 13 – 3 = 10

Atomic number of chlorine = Number of electrons = 1 7

Number of electrons in CI^– = 17 + 1 = 18