Question

Three elements X,Y and Z having atomic numbers 11,7,6 respectively reacts with oxygen to form oxides . Arrange them in increasing order of basic nature.

Answer 1

1. Atomic number 11 is sodium and forms Na₂O.
2. Atomic number 6 is carbon and forms CO₂.
3. Atomic number 7 is nitrogen and forms NO₂.
4. According to periodic table metallic character decreases left to right in a period,so the order of basicity is is Na>C>N.