Hydrogen has only one electron. Just the one. And it is a valence electron.
Phosphorus has 5 valence electrons.
By looking at the group number you can tell how many valance electrons there are ex: Group 1= 1 valance electrons Group 2-12= 2 valance electrons Group 13= 3 valance electrons Group 14= 4 valance electrons Group 15= 5 valance electrons Group 16= 6 valance electrons Group 17= 7 valance electrons Group 18= 8 valance electrons
6 Use the periodic table as a guide. As you go across from left to right the number of valence electrons increases. H = 1 Be = 2 B = 3 C = 4 N = 5 O = 6 F = 7 This trend stays the same all the way down each column. Usually periodic tables are marked on the top with roman numerals or something to signify how many valence electrons each element has.
4 electrons in the outer shell 2-8-4 electron configuration :D
Hydrogen has one shell with only 1 electron on the valance shell.
1
2 valance electrons
There are 27 valance electrons.
Iodine has 7 valance electrons
Hydrazine has a total of 14 valence electrons - four from each nitrogen atom and one from each hydrogen atom.
They have different numbers of valance electrons
6 valence electrons
6 valence electrons
there are six
Two.
none
2