Answer to Question #159540 in General Chemistry for Gaby Jackson

Question

The radius of the Ca atom is 0.197 nm; the radius of the Ca²⁺ ion is 0.099 nm. Account for this difference. 

Answer 1

Ca have radius is 0.197 nm .

But Ca2+ radius have 0.099nm.

Because Ca2+ have smaller radius due to loss of 2 electrons .