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Assertion (A): Atomic radii of elements ...

Assertion (A): Atomic radii of elements decrease across a period from left to right.
Reason (`R_1`): Nuclear charge increases.
Reason (`R_2`): No. of shells increases.

A

`1`. `R_1` supports `A`

B

`2`.`R_2` supports `A`

C

`3`. `R_1`&`R_2` supports `A`

D

`4``R_1`&`R_2` does not supports `A`

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