A) 288 pm
B) 398 pm
C) 144 pm
D) 618 pm
Correct Answer: C
Solution :
[c] Edge length \[=2\,{{r}^{+}}\,+\,2\,{{r}^{-}}\] |
\[\frac{508}{2}={{r}^{+}}+{{r}^{-}}\] |
\[254=110+{{r}^{-}}\] |
\[{{r}^{-}}=254-110=144\,pm\] |
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