What is the atomic number of mercury?

Options

  • A. 78
  • B. 79
  • C. 80
  • D. More than one of the above
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

C. 80

Detailed Explanation

Mercury has atomic number 80. Atomic number represents the number of protons present in the nucleus of an atom. Mercury is represented by Hg in the periodic table and belongs to group 12. Other familiar elements near it in the periodic table include gold with atomic number 79 and thallium with atomic number 81.