Question

In the table given below, fill the vacant places.
Elements Hydrides Oxides
N NH₃ -
Al - Al₂O₃
C - CO₂

Answer 1

Answer:

big question ................

Answer 2

The elements in vacant places are :--

(1) oxides of nitrogen- N2O, N2O5, NO, N2O3, N2O4, NO2

(2) Hydride of aluminium is AlH3

(3) Hydride of carbon is CH4

(1) Nitrogen reacts with oxygen in different proportions to give various oxides most stable oxides are N2O3 and N2O5 and as the oxidation state increases the acidic nature of oxide also increases.

The oxide N2O3 is most acidic in nature and most common oxide is N2O and NO in nature.

(2) The hydride of aluminium is AlH3 as the valency of aluminium is +3 as it belongs to 13 group of the periodic table so has three electrons to lose to gain stable configuration hence its valency is +3 and that of hydrogen is 1  so the formula becomes AlH3.

(3)The Hydride of carbon is CH4 as valency of carbon is 4 it can gain 4 electrons or can loose 4 electrons to get stable configuration hence valence electrons are 4 and that of hydrogen is 1 so formula is CH4 that is one carbon is surrounded by 4 hydrogen atoms.