Question

1.Valency is the ____________ of an element. (1 Point) solubility density condensing capacity combining capacity 2.The compound among the following in which both the ions has a valency of 1 is (1 Point) MgF2 Na2O BaO HCl 3.The gas that does not have a stable gas configuration among the following is ___________. (1 Point) hydrogen helium argon neon 4.The formula of copper sulphate is (1 Point) Cu2(SO4)3 Cu(SO4)3 CuSO4 Cu2SO4 5.The monoatomic ion among the following is (1 Point) NO3- OH- CO32- S2- 6.Zinc exists as __________ in its compound. (1 Point) Zn2+ Zn3+ Zn+ Zn 7.Sodium exists as ___________ in its compound. (1 Point) Na Na+ Na2+ Na3+ 8. The valency of carbon is (1 Point) 1 2 3 4 9. The simplest ratio of nitrogen and hydrogen in ammonia is (1 Point) 1:1 1:2 1:3 1:4 10. The ratio of the mass of magnesium and oxygen in MgO is (1 Point) 1:2 2:2 3:2 4:2 pls help me for the completion of work

Answer 1

Answer:

1 combining capacity

2 HCl

3 h2.

4 cuso4

5oh

6zn2

7na plus

8 4

91:3