Multiple choice

Which of the following pairs forms an electrically neutral atom?

  1. Proton and neutron

  2. Proton and electron

  3. Neutron and electron

  4. Nucleus and electron

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An atom is electrically neutral because the positive charge of the protons in the nucleus is balanced by the negative charge of the electrons orbiting the nucleus.