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fcc सेल के एक आयनिक क्रिस्टल के कोर की लम्बाई 508 pm है । यदि धनायन की त्रिज्या 110 pm है तो ऋणायन की त्रिज्या होगी :
A. 618 pm
B. 144 pm
C. 288 pm
D. 398 pm

1 Answer

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Correct Answer - B
आयनिक क्रिस्टल के कोर की लम्बाई
`(A^(+)B^(-)) = 2 (r_(A^(+)) + r_(B^(-)))`
`therefore" "508 = 2(110 + r_(B^(-)))`
`r_(B^(-)) = 144`

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