Atomic number of idoine and its mass number is 125 ,Radius of idoine is approximately
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Explanation:Mass number of the atom = 125 (Given)
Atomic number of iodine = 53 (Given)
Number of nucleons in an atom = 125
Radius of the nucleus = R
Thus,
R0 = 1.2 × 10`-15m ( Constant Value)
53 electrons in iodine atom are distributed as 2,8,18,18,,,, , thus n = 5
Rn = (0.53 × 10`10 ) n²/z
= 0.53 × 10`10 × 5² / 53
= 2.5 × 10-11m
Therefore, the radius is 2.5 × 10-11m.
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