Question

E. Answer the following questions in brief.
1. Name the subatomic particles present in an atom.
2. Is gold an element or a compound?
3. Write the valencies of copper, nitrogen and sulphur.
4. Name the element represented by the symbol Cl.​

Answer 1

Answer:

electron , proton , nutron

Answer 2

Explanation:

1. Name the subatomic particles present in an atom.

Ans: Electrons, neutrons and protons are the subatomic particles present in an atom.

2. Is gold an element or a compound?

Ans : Gold is an element (Au) .

3. Write the valencies of copper, nitrogen and sulphur.

Ans : Valency of copper is 1 and 2 .

Valency of nitrogen is 3.

Valency of Sulpher is 2 .

4. Name the element represented by the symbol Cl.

Ans : Chlorine is represented by the symbol Cl.