Question

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$
Assertion A : The nuclear density of nuclides ${}_5^{10}B,{}_3^{6}Li,{}_{26}^{56}Fe,{}_{10}^{20}Ne$ and ${}_{83}^{209}Bi$ can be arranged as ${\rho }_{Bi}^N>{\rho }_{Fe}^N>{\rho }_{Ne}^N>{\rho }_B^N>{\rho }_{Li}^N$
Reason R : The radius $R$ of nucleus is related to its mass number $A$ as $R=R_0{A}^{1/3}$, where $R_0$ is a constant.
In the light of the above statements, choose the correct answer from the options given below

• A. Both $A$ and $R$ are true and $R$ is the correct explanation of $A$
• B. $A$ is false but $R$ is true
• C. Both $A$ and $R$ are true but $R$ is NOT the correct explanation of $A$
• D. A is true but $R$ is false

Answer 1

Answer: (B)

Nuclear density is independent of $A$.