Question

what is the valency of 1. K+ -
2. NH4+
3. Ca2+
4. Al3+
5. Cl-
6. N3-
7. SO42-
8. I-
9. PO43-
10. NO2-

Answer 1

Answer:

1. +1

2. +1

3. +2

4. +3

5. -1

6. -3

7. -2

8. -1

9. -3

10. -2