Question

Stabiliti pozitia in T.P. (tabelul periodic), pe baza configuratiei electronice pentru:Na,P,Sc,Rb,Li,Al.

Answer 1

Z=11 Na

1s2 2s2 2p6 3s1

gr. 1 (I-A), per. 3

Z=15 P

1s2 2s2 2p6 3s2 3p3

gr. 15 (V-A), per. 3

Z=21 Sc

1s2 2s2 2p6 3s2 3p6 4s2 3d1

gr. 3 (III-B), per. 4

Z=37 Rb

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1

gr. 1 (I-A), per. 5

Z=3 Li

1s2 2s1

gr. 1 (I-A), per. 2

Z=13 Al  

1s2 2s2 2p6 3s2 3p1

gr. 13 (III-A), per. 3