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# CBSE Class 12-science Answered

the atomic masses of two different nuclei are 3 and 81 then the ratio of their radius r
Asked by akashjyani705 | 06 Mar, 2022, 04:39: PM
Expert Answer
Radius R of nucleus is given as

R = Ro A1/3

where Ro = 1.2 × 10-15 m    and A is mass number of nucleus

for nuclear mass no. 3 , R = 1.2 × 10-15 × 31/3 = 1.731 × 10-15 m

for nuclear mass no. 81 , R = 1.2 × 10-15 × 811/3 = 5.192 × 10-15 m

Answered by Thiyagarajan K | 06 Mar, 2022, 05:34: PM

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