The total number of protons and neutrons in an atom's nucleus.

Keep practicing — related questions

• The number of protons in the nucleus of an atom.
• The number of protons in the nucleus of an atom is its:
• The atomic number of an atom is:
• The atomic number of an element signifies the number of
• Which of the following statements are incorrect for a nucleus of an atom? (a) The size of nucleus is of the...
• Rutherford’s scattering experiments led to the discovery of (A) presence of neutrons in the nucleus (B) nuc...
• The atomic number of which of the following elements represents a metal?
• Which of the following pairs of atomic numbers represents the elements in the same group?