On moving across a period, the atomic size decreases and nuclear charge increases and therefore the force of attraction exerted by the nucleus on the electron in the outermost shell increases.Potassium forms K+ ion but it does not form K2+ because of;

On moving across a period, the atomic size decreases and nuclear charg

1.	On moving across a period, the atomic size decreases and nuclear charge increases and therefore the force of attraction exerted by the nucleus on the electron in the outermost shell increases.Potassium forms K+ ion but it does not form K2+ because of;
Answer» On moving across a period, the atomic size decreases and nuclear charge increases and therefore the force of attraction exerted by the nucleus on the electron in the outermost shell increases. Potassium forms $K^{+}$ ion but it does not form $K^{2 +}$ because of;