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Two elements 'X' and 'Y' have the follow...

Two elements 'X' and 'Y' have the following configuration
` X= 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2`
`Y=1s^2 2s^2 2p^6 3s^2 3p^5`
The compound formed by the combination of 'X' and 'Y' will be

A

`XY_2`

B

`X_5 Y_2`

C

`X_2 Y_5`

D

`XY_5`

Text Solution

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The correct Answer is:
A
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