Question

The mass of an electron is approximately 9 × 10-28 grams, while the mass of a neutron is approximately 2 × 10-24 grams. Which of the following is true?

A.
The mass of a neutron is approximately 2,000 times the mass of an electron.

B.
The mass of a neutron is approximately 20,000 times the mass of an electron.

C.
The mass of a neutron is approximately 10,000 times the mass of an electron.

D.
The mass of a neutron is approximately 1,000 times the mass of an electron.

Answer 1

The answer is A the mass of a neutron is approximately 2,000 times the mass of an electron

Answer 2

A. Approximately 2000 times the mass of an electron.

Explanation:

Lets do the division:

Mass of neutron / mass of electron

2 × 10^-24 / 9 x 10^-28

= 0.222 x (10^(-24 - (-28))

= 0.2222... x 10^4

= 2222.