Question

an element atomic mass is 37 and number of neutrons in the nucleous is 20 .its position in the periodic table is. 1) periodic 3 and group VII, 2) periodic 3 and group 1, 3) periodic 4 and group III

Answer 1

Answer:

i think the fourth option which you forgot is correct the electronic configuration is

2,8,8,2 it means fourth period and 2 group...

Explanation:

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