Question

Составление формул по валентности 1) Na... O... 2)Hg во второй валентности...Cl в первой валентности

Answer 1

Na2O, HgCl.

А так бывают NaO, Na2O2, HgCl2.

Answer 2

Valency Formulas

1) Na in the first valency: The valency of sodium (Na) is 1. Sodium typically forms compounds in which it has a valency of +1. For example, in sodium chloride (NaCl), sodium has a valency of +1.

2) O in the second valency: The valency of oxygen (O) is 2. Oxygen typically forms compounds in which it has a valency of -2. For example, in sulfuric acid (H2SO4), oxygen has a valency of -2.

3) Hg in the second valency: The valency of mercury (Hg) in its compounds can vary. In some compounds, mercury exhibits a valency of +2. For example, in mercury(II) chloride (HgCl2), mercury has a valency of +2.

4) Cl in the first valency: The valency of chlorine (Cl) is 1. Chlorine typically forms compounds in which it has a valency of -1. For example, in hydrogen chloride (HCl), chlorine has a valency of -1.

I hope this helps! If you have any more questions, feel free to ask.