Periodni sistem
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unseptunium ‹
Usu ‹
unseptbium
› unsepttrium
› Ust
unseptbium (Usb)
hypothetical chemical element with the atomic number 172.
Vrstno Število
172
Kemijski Simbol
Usb
proton
172
elektron
172
electron configuration
1s
2
2s
2
2p
6
3s
2
3p
6
4s
2
3d
10
4p
6
5s
2
4d
10
5p
6
6s
2
4f
14
5d
10
6p
6
7s
2
5f
14
6d
10
7p
6
8s
2
5g
18
6f
14
7d
10
8p
6
9s
2
6g
2
Elektronska lupina
2, 8, 18, 32, 50, 34, 18, 8, 2
unseptbium
identifikator