Question

1. Визначте валентність у сполуках Na20, MgO, P203, PH3, H2S, N2O, N2O5, N2O3. Парні маси: (2 бали)​

Answer 1

Ответ:

Ответ:

P2O5 - P -5 вал. O-2

H2S- S -2 H-1

PH3 - P-3 H-1

Mn2O7- Mn-7 O-2

NA2O- NA-1 O-2

Answer 2

Valence of Compounds

The valence of a compound refers to the combining capacity of an element, which determines the number of bonds it can form with other elements. Here are the valences of the compounds you mentioned:

1. Na2O (Sodium Oxide): - Sodium (Na) has a valence of +1. - Oxygen (O) has a valence of -2. - Therefore, the valence of Na2O is +2 for sodium and -2 for oxygen.

2. MgO (Magnesium Oxide): - Magnesium (Mg) has a valence of +2. - Oxygen (O) has a valence of -2. - Therefore, the valence of MgO is +2 for magnesium and -2 for oxygen.

3. P2O3 (Phosphorus Trioxide): - Phosphorus (P) has a valence of +3. - Oxygen (O) has a valence of -2. - Therefore, the valence of P2O3 is +3 for phosphorus and -2 for oxygen.

4. PH3 (Phosphine): - Phosphorus (P) has a valence of +3. - Hydrogen (H) has a valence of +1. - Therefore, the valence of PH3 is +3 for phosphorus and +1 for hydrogen.