Question

Size of the nucleus is:

• A. 1.75 $\times$ ${10}^{-15}$ m
• B. 10 cm
• C. 2 $\times$ ${10}^{-15}$ m
• D. 1.75 $\times$ ${10}^{-15}$ cm

Answer 1

The correct option is A

1.75 $\times$ ${10}^{-15}$ m

The diameter of the nucleus is in the range of 1.75 fm (1.75 $\times$ ${10}^{-15}$ m) for hydrogen (the diameter of a single proton) to about 15 fm for the heaviest atoms, such as uranium.