Variable Valency

Q.

What is variable valency ? Name two elements having variable valency and state their valencies.

Q.

Select the correct adverb. Valery runs ___ of the three of us. A) faster B) most fast C) fastest D) none of the above

Q.

Copper exhibits two types of valencies. Their sum is:

1. 3

2. 4

3. 5

4. 6

Q.

What is the valency range of metals?

1. 1 to 4

2. 1 to 2

3. 3

4. 1 to 3

Q.

In a chemical formula of a diatomic ionic compound, the valency of the anion is 3. Find out the valency of the cation.

1. Less than 3

2. More than 3

3. Equal to 3

4. Cannot be determined

Q.

The variable valencies that iron (Fe) can exhibit are _______.

1. 1, 3

2. 2, 4

3. 1, 4

4. 2, 3

Q.

The elements which exhibit more than one valency are said to exhibit ________ valency.

Q. The chemical formula of the ionic compound containing ${Fe}^{3+}$ and $(S{O}_4{)}^{2-}$is____.

1. ${Fe}_{2}S{O}_4$
2. ${Fe}_3(S{O}_4{)}_2$
3. ${Fe}_2(S{O}_4{)}_3$
4. ${Fe}_{3}S{O}_4$

Q.

Which of the following represent the compound $CuC{l}_2$?

1. Copper(I) chloride
2. Copper(II) chloride
3. Cupric chloride
4. Cuprous chloride

Q. The valencies exhibited by iron are ______.

1. one and two
2. two and three
3. one and three
4. three and four