Question

I. Answer in one word or one sentence:
1. Name the subatomic particles.
2. Name the atomic particle which is neutral.
3. Name the polyatomic ion that carries a positive charge.
4. What is the sum of protons and neutrons known as?
5. Who discovered the fact that an atom has a nucleus?​

Answer 1

Answer:

1. Protons, electrons and neutrons

2. Neutron

3. NH4 (Ammonium ion)

4. Atomic mass

5. Ernest Rutherford

Answer 2

Answer: 1. Protons, Electrons and Neutrons are the subatomic particles.

2. Neutron is the subatomic particle which is neutral, which means no charge.

3. The polyatomic ion that carries a positive charge is Proton.

4. The sum of Protons and Neutrons is known as Mass number.

5. Ernest Rutherford discovered that atom has a nucleus

Explanation: