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Atomic radius (pm) of Al, Si, N and F re...

Atomic radius (pm) of Al, Si, N and F respectively is

A

117,143,64,74

B

143,117,74,64

C

143,47,64,74

D

64,74,117,143

Text Solution

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The correct Answer is:
B
Al Si belong to 3rd period of periodic table while N, And fluorine to second period .
the size of element decreases from left to right in a period hence the order of size is
`Al gt Si gt N gt F `
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