For isoelectronic ions, how are effective nuclear charge and ionic radius related? a) as nuclear charge (z) increases, ionic radius increases. b) as nuclear charge (z) increases, ionic radius decreases.

Therefore, correct option is B.

Explanation:

For isoelectronic ions : As the nuclear charge increases the atomic radius decreases due to increase in the attractive force on the outermost electrons.

if two electrons have the same n, the same ℓ, and the same ml, then they are in the same orbital. the pauli exclusion principle states that no two identical fermions (a fancy word for electrons and other subatomic particles like electrons) may occupy the same quantum state in an atom simultaneously.

false

because it does not have the potential to be entirely used up