23. a) An element has three shells. The outermost shell has 7 electrons.
Identify this element and give its valency.
b) Give the total nini
Answers
Answered by
1
Answer:
The electronic configuration of Br is 2, 8, 8, 7. It have 7 electron in the outermost shell.
Answered by
0
Answer:
Cl
Explanation:
3 shells 2,8,7
at. no 17
element Cl
valency -1
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