Question

An element has atomic number 13. In which group and period it should be placed?​

Answer 1

Answer:

z =13

E.C-2,8,3

PERIOD-3

GROUP-13

Explanation:

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Answer 2

Answer:

By spdf method

1s2 2S2 2p6 3s2 3p1

13 group and 1 period

Configuration method,

2,8,3

Period =3

Group =13

Element =Aluminum