Respuesta :
D. Phosphorus
You can tell what elements have how many valence electrons by what group they're in. Groups are vertical.
So group 1 has 1 valence electron
Group 2 has 2 valence electrons
Group 3 has 3 valence electrons, etc.
You can tell what elements have how many valence electrons by what group they're in. Groups are vertical.
So group 1 has 1 valence electron
Group 2 has 2 valence electrons
Group 3 has 3 valence electrons, etc.