Question

Classify each of the following binary compounds by the oxidation number of hydrogen. Match each item with appropriate category. items: H2O, HCl, MgH2, NH3, NaH, CaH2,H2,CH4 cateogories -1, 1+, 0

Answer 1

Answer:

1. Category +1: $H^{+1}_{2}O^{-2}$, $H^{+1}Cl^{-1}$, $N^{-3}H^{+1}_{3}$, $Na^{-1}H^{+1}$ ,$C^{-4}H^{+1}_{4}$

2. Category -1: $Mg^{+2}H^{-1}_{2}$, $Ca^{+2}H^{-1}_{2}$

3. Category 0: $H^{0}_{2}$

Explanation:

1. Category +1:

The more common number of oxidation of the oxygen is +1.

$H^{+1}_{2}O^{-2}$

$H^{+1}Cl^{-1}$

$N^{-3}H^{+1}_{3}$

$Na^{-1}H^{+1}$

$C^{-4}H^{+1}_{4}$

2. Category -1:

The hydrogen takes the number of oxydation -1 in the hydrides.

$Mg^{+2}H^{-1}_{2}$

$Ca^{+2}H^{-1}_{2}$

3. Category 0:

The number of oxydation of an isolated element is always 0.

$H^{0}_{2}$