Which of the following statements is/are correct?
(a) Protons have a charge of -1.
(b) Neutrons have no charge.
(c) An electron has negligible mass compared to the mass of a neutron.

(d)Number of proton equals to number of electrons on a stable atom
A
Statements b ,c and d

B
Statements a ,b and c

C
Statements b and c

D
Statements d only

Option A is correct. Statements b,c and d are true

Explanation:

Step 1: Data given

Proton = a subatomic particle with a positive electric charge of +1 and a mass slightly less than that of a neutron.

Neutron = a subatomic particle of about the same mass as a proton but without an electric charge

electron = a subatomic particle whose electric charge is negative one elementary charge.

The mass of an electron is only about 1/2000 the mass of a proton or neutron, so electrons contribute virtually nothing to the total mass of an atom

Step 2: Statements

(a) Protons have a charge of -1.

This is false. Protons have a charge of +1

(b) Neutrons have no charge.

 This is true

(c) An electron has negligible mass compared to the mass of a neutron

 This is true

(d)Number of proton equals to number of electrons on a stable atom

This is true. A stable atom has a charge of 0. this means the same amount of protons and electrons

Option A is correct. Statements b,c and d are true

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