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Identify the group (in Modern Peridic Ta...

Identify the group (in Modern Peridic Table) and valency of a hypothetical elemt having atomic number 11.9. if group number is `x` and valency is `y`. Given the the value of `x+y`.

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Verified by Experts

The correct Answer is:
2
`8s^(1)`
`x = 1, y = 1`
`1+ 1 = 2`.
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