Question #e71de

1 Answer
Aug 30, 2017

Answer:

#(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)#