79

Au
Gold
196.967

Atomic number
atomic mass
# of protons
# of neutrons
# of electrons

1 answer

Here's the information for gold (Au) based on the atomic number and mass you've provided:

  • Atomic number: 79
  • Atomic mass: 196.967
  • Number of protons: 79 (the atomic number is equal to the number of protons)
  • Number of electrons: 79 (in a neutral atom, the number of electrons equals the number of protons)
  • Number of neutrons: Atomic mass (rounded to the nearest whole number) - Atomic number = 197 - 79 = 118

So, summarizing:

  • Atomic number: 79
  • Atomic mass: 196.967
  • Number of protons: 79
  • Number of neutrons: 118
  • Number of electrons: 79