Mag-sign In
WAEC - Chemistry (1999 - No. 2)
What is the electronic configuration of an element represented as 19
9
X?
1s
2
2s
2
2p
5
1s
2
2s
2
3s
2
3p
3
1s
2
2s
2
2p
3
3s
2
1s
2
2s
2
2p
6
3s
2
3p
6
4s
1
Mga komento (0)
Mag-login Upang Magkomento
Advertisement
Payagan ang javascript na i-load nang maayos ang page na ito
