# How many valence electrons do group two have?

The $\text{alkaline earth metals}$ have 2 valence electrons.
The $\text{alkaline earth metals}$ come from Group 2 of the Periodic Table. And since the Periodic Table reflects electronic structure, $B e , M g , C a , S r , B a$ all have 2 valence electrons, and all commonly form ${M}^{2 +}$ ions.