menu
Recall that the maximum number of electrons in the \(n=1\) orbit is \(2\). So, if an atom has only the \(n = 1\) orbit, \(2\) electrons in the \(n=1\) orbit are sufficient to make the atom stable.
What is the valency of Hydrogen and Helium?
  • \(\text{Hydrogen} = 1\), \(\text{Helium} = 2\)
  • \(\text{Hydrogen} = 1\), \(\text{Helium} = 0\)
  • \(\text{Hydrogen} = 7\), \(\text{Helium} = 6\)
  • \(\text{Hydrogen} = 1\), \(\text{Helium} = 6\)