Question

Question No : 84
An element having electronic configuration1s22s22p3s23p? will form
01) Neutral oxide
2) Acidic oxide
3) Basic oxide
4) Amphoteric oxide​

Answer 1

One electron present in outermost s-orbital, so it is a monovalent element.

Hence, the oxide formed will have the chemical formula M

2

O. Such compounds will be basic oxides.

From electronic configuration, it is seen that it has a total of 11 electrons, so it must be Na atom. Oxide of Na atom (Na

2

O) gives 2NaOH in aqueous solution.

Na

2

O +H

2

O ⟶ 2NaOH

Also, according to their basic behavior, they react with acids in typical acid-base reactions to produce salts and water.

Hence, option B is correct.

Answer 2

3) Basic oxide

Explaintation:

One electron present in outermost s-orbital, so it is a monovalent element.

Hence, the oxide formed will have the chemical formula M2O. Such compounds will be basic oxides.  

From electronic configuration, it is seen that it has a total of 11 electrons, so it must be Na atom. Oxide of Na atom (Na2O) gives 2NaOH in aqueous solution.

Na2O + H2O ⟶  2NaOH

Also, according to their basic behavior, they react with acids in typical acid-base reactions to produce salts and water.

Hence, option (3) is correct.