The element Astatine has 85 protons, as well as 85 electrons.
Also:
The number of protons is equal to the atomic number (the big number by the atom on a periodic table)
The number of electrons is equal to the number of protons
The number of neutrons is equal to the atomic mass minus the atomic number
If element X has 85 protons, how many electrons does it have?
electrons
1 answer