Question

explain with reason the size of CL minus is larger than CL atom while size of an Na+ is smaller than Na
atom​

Answer 1

Explanation:

cl minus is anion . anion has greater size than atom because screening effect dominates on effective nuclear charge because of addition of electrons in outermost shell so size increases where as Na+ is a cation . cation has small size than atom because loosing of electrons causes increase in effective nuclear charge so that electrons get closer to nucleus and size decreases...

Answer 2

Answer:

Cl minus (18 electrons) is an anion and is having 1 extra electron than Cl atom (17 electrons) so the size of chlorine ion is larger than chlorine atom whereas Na positive ion is a cation and is having 1 less electron than Na so Na plus is having lesser orbits and smaller size than Na

Explanation:

size of a cation is smaller than the size of anion as anion is carrying more negative charge i.e more electrons ,more orbits therefore larger size than cation