Here are 16 valence electrons: 3 from H, 8 from O and 5 from P.
8 - called valence electrons. it doesn't matter what energy level or orbital shape. a "happy atom" has 8 valence electrons
1
It depends on the atom. List what element the atom is from.
A stable atom has 8 electrons in its outer most valence shell. A simple way to remember this is that all atoms want to be like the noble gases which all have 8 electrons (except helium but the reason is complicated and not necessary here)
Phosphorous has 5 valence electrons. So, you need 3 more to complete it.
6 valence electrons
how many valence electrons does family 1 have
The molecular formula for phosphoric acid is H3PO4. I'll assume you can count.
3 valence electrons.
8 valence electrons
8 valence electrons
3 valence electrons
5 valence electrons.
3 valence electrons
Beryllium has two valence electrons.
10 valence electrons
Cl has 7 valence electrons.