Inloggen
WAEC - Chemistry (2009 - No. 9)
Which of the following electronic configurations correctly represents an element in period 3 of the periodic table?
1s
2
2s
2
2p
2
1s
2
2s
2
2p
6
1s
2
2s
2
2p
6
3s
2
3p
4
1s
2
2s
2
2p
6
3s
2
3p
6
4s
1
Opmerkingen (0)
Log in om te reageren
Advertentie
Sta JavaScript toe om deze pagina correct te laden
