Question

Amongst the following, the maximum number of elements that shows variable

valency.

Carbon, Sulphur, iodine, Iron, Sodium, calcium, Potassium, Copper, Lead, Chlorine.​

Answer 1

Explanation:

1. Iodine +7 to -1
2. Chlorine +7 to -1
3. Sulphur +6 to -2
4. Lead +4 , +2
5. Carbon +4 to - 4
6. Iron +3, +2

Answer 2

Answer:

Wo toh nahi pata

Explanation:

School idhar mat kholo