Question

Effective nuclear charge of potassium chloride

Answer 1

Answer:

Explanation:  There are 18 inner electrons because the inner electrons lie in the 1st and 2nd rows (electron configuration: 1s^2 2s^2 2p^6 3s^1), and since the number of valence shell electrons is 1 and the total amount of electrons is 19, then there must be 18 inner electrons. This gives you an effective nuclear charge of 1+