Question

1. choose the best answer.

which type of particle has the smallest mass?
electron
proton
neutron

1. choose the best answer.

what type of particle is located in the nucleus and has no charge?
neutron
electron
proton

Explanation:

• For question 14: Electrons have a much smaller mass compared to protons and neutrons. Protons and neutrons have masses that are approximately \(1836\) times greater than that of an electron.
• For question 15: Neutrons are located in the nucleus of an atom and have no electrical charge. Electrons are outside the nucleus and have a negative charge, while protons are in the nucleus and have a positive charge.

Answer:

1. electron
2. neutron