Question

Size of cation is smaller than that of the atom because of:

• A. the whole of the outer shell of electrons is removed
• B. effective nuclear charge increases
• C. the gain of electrons
• D. statement, that cation is smaller than atom, is wrong

Answer 1

The correct option is B effective nuclear charge increases

Size of cation is lower than neutral atom because as a particular atom looses electron, no of proton become more than no of electron and attraction forces increases so radius decreases.