Question

arrange the ions in increasing order of their atomic radii Na+ Cl- Mg2+ O2-​

Answer 1

Answer:

Mg+2,Na+,Cl-,O-2

Explanation:

The premise of this question is very basic and it is in fact easy to solve if you know the concept. BUT as a short cut trick for any of these questions follow the Z/e rule.

Z is the atomic number. e is the number of electrons. Whatever has higher z/e value has smaller size and whatever has smaller z/e value has bigger size. Go ahead Try it!

Example : z/e of na+ is 11/10 =1.1

Z/e of mg+2 is 12/10 =1.2

So mg is smaller than na

Answer 2

Answer:O2->cl->Na+>Mg2+

Explanation:all of these contains same electron but we know size of anions is large than cation .