how-do-you-determine-the-number-of-valence-electrons-for-main-group-elements

Question

How do you determine the number of valence electrons for main group elements?

Accepted Answer

By looking at the group number of the element.

Answer

By counting the total number of electrons in the atom.

Answer

By adding the s and p electrons.

Answer

By subtracting the atomic number from the mass number.