Log ind
WAEC - Chemistry (1991 - No. 25)
How many principal electronic shells has an atom whose electronic configuration is shown below? 1s
2
2s
2
2p
6
3s
1
1
2
3
4
11
Kommentarer (0)
Log ind for at kommentere
Reklame
Tillad, at javascript indlæser denne side korrekt
