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When element A having electric configura...

When element A having electric configuration 2,8, 2 combine with element B having electronic configuration 2, 7. Formula of compound will be ______

A

AB

B

`AB_(2)`

C

`A_(2)B`

D

`A_(2)B_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
` " "A to A^(2+) +2e`
`2,8, 2 " "2, 8`
`B+e^(-) to B^(-)`
`2, 7" "2,8`
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