Question

what is the order of magnitude of radius of an atoms.​

Answer 1

The nuclear radius of any atom can be approximated by using the formula R=r0A13, where A is the atomic mass number and r0 is a constant having a value of 1.25×10−15 m. So, R=1.25×10−15A13, thus the order of magnitude of radius of nucleus is 10−15. Hence, option a is the correct answer.

Answer 2

Answer:

Usually, radius of atom is of an order of 10^−10 and radius of nucleus is of an order of 10^−15. ... Hence, we can say that radius of atom is 10^5 times greater than the radius of nucleus.

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