Question

ns2 np5
O ns2 np 2
1 point
17. an element with electronic
configuration 2,8,5 belongs to
period and
group
*
O 3,3
O 5,8
O 16.7
O 3,15
18. The energy required to remove
1 point
2.​

Answer 1

Answer:

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Answer 2

Answer:

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