Question

4.The valency of magnesium is 2. Give the valency of the other ion in the following compounds.
i. Mgo
ii.Mg3N2
iii. MgCl2
iv. MgCO3
v. Mg(NO3)2
vi. Mg(OH)2
5.Write the names of the following compounds.
i. FeCl2
ii. Caso4
hii. NaCl
iv. Zn(OH)2
v. BaCl2​

Answer 1

Answer:

Question 4

Mgo - oxygen = -2

Mg3N2 - Nitrogen = -3

MgCl2 - Chlorine = -1

MgCO3 - carbonate = -2

Mg(NO3)2 - nitrogen trioxide = -1

Mg(OH)2 - hydroxide = -1

Question 5

ferrous chloride - FeCl2

calcium sulphate - CaSO4

sodium chloride - NaCl

zinc hydroxide - Zn(OH)2

barium chloride - BaCl2

Answer 2

It is from Inspired Chemistry 7 by Orient Blackswan

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