1.

What is the radius of iodine atom (at. no. 53, mass number 126)                                                [CBSE PMT 1993]

A.            \[2.5\times {{10}^{-11}}m\]
B.            \[2.5\times {{10}^{-9}}m\]
C.            \[7\times {{10}^{-9}}m\] 
D.            \[7\times {{10}^{-6}}m\]
Answer» B.            \[2.5\times {{10}^{-9}}m\]


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