SATHEE: Nuclei - Result Question 12

Nuclei - Result Question 12

12. The stable nucleus that has a radius half that of $F e^{56}$ is

(a) $L i^{7}$

(b) $N a^{21}$

(d) $C a^{40}$

[1997]

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Answer:

Correct Answer: 12. (a)

Solution:

(a) The nuclear radius $R = R_{0} A^{1 / 3}$

or $R \propto A^{1 / 3}$

$\begin{aligned} or, R^{3} \propto A \Rightarrow A \propto R^{3} \\ ∴ \frac{A_{2}}{A_{1}} = (\frac{R_{2}}{R_{1}})^{3} = (\frac{R_{1} / 2}{R_{1}})^{3} = \frac{1}{8} \\ A_{2} = \frac{A_{1}}{8} = \frac{56}{8} = 7 \end{aligned}$

Nuclei - Result Question 12

12. The stable nucleus that has a radius half that of $F e^{56}$ is

Answer:

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Nuclei - Result Question 12

12. The stable nucleus that has a radius half that of Fe56 is

Answer:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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12. The stable nucleus that has a radius half that of $F e^{56}$ is