Question

Question #e71de

Answer 1

`(a)<(b)<(c)`

Explanation:

The second short period of periodic table is 3rd period.

(a) Sodium oxide(`Na_2O`) is highly ionic in nature

(b) Aluminium oxide(`Al_2O_3`) is amphoteric in nature

(c)Silicon oxide(`SiO_2`) exists as a giant molecule i.e quartz linked by covalent bonds.

So, the order of atomic number should be `(a)<(b)<(c)`