Question

1.valency of oxygen is_____?
2.non metals have______valency?
3.formula of Pottasium chloride is________?
4. gas is used in AC is ______?
5 formula of sodium chloride_______?

5 marks questions.​

Answer 1

Explanation:

I :- 21%

please follow the following giving me the

Answer 2

Answer:

1. The valency of oxygen is -2
2. nonmetals accept electron and have a valency of (-) as they form anion they vary from group to group have valency of -1 -2 -3 .
3. Potassium has atomic number of 19 and it need to loose 1 electron to be donated, thus it has the valency of +1. And together Chlorine and potassium forms Potassium chloride, because the donated electron of potassium it taken by the chlorine.
4. NaCl
5. CHEBI:26710 - sodium chloride
6. An inorganic chloride salt having sodium(1+) as the counterion. Sodium chloride , commonly known as salt (although sea salt also contains other chemical salts), is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ions.