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Match the correct atomic radius with the...

Match the correct atomic radius with the element.

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The correct Answer is:
A
All the given elements are of some period and along a period, atomic radii decreases because effective nuclear charge increases. Thus, the order of atomic radii is
`O lt N lt C lt B lt Be`
or, `Be=111` pm, `O=66` pm, `C=77` pm, `B=88` pm, `N=74` pm.
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  • Select the correct atomic radius order :-

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