Question

Atomic number of iodine is 53 its mass number is 125 what is its radius

Answer 1

6.0*10-15 m... .........

Answer 2

Answer:

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.