Question

F Answer the following questions in brief.
1. What does an atom consist of?
H
1
2. Is copper an element or a compound?
3. Write the valencies of iron, nitrogen,
copper and sulphur.
4. Identify the element represented by the
symbol Al.​

Answer 1

Answer:

Answer of 3rd : Valency of copper is + Valency of Nitrogen is-3 Valency of sulphur is-2

Explanation:

I