WBCS.LIVE practice question

Which one of the following statements is not correct?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. The mass numbers of atoms of different elements may be same.
  2. The mass numbers of atoms of an element may be different.
  3. The number of protons in the all atoms of an element is same.
  4. The number of neutrons in the all atoms of an element is always same.

Correct answer and explanation

Correct answer: The number of neutrons in the all atoms of an element is always same.