Atomic StructurehardNUMERICAL

Using the empirical formula for nuclear radius (where ), calculate the radius of the nucleus of an AAtomic Structure Chemistry Question

Question

Using the empirical formula for nuclear radius $R = R_0 A^{1/3}$ (where $R_0 = 1.33 \times 10^{-13} \text{ cm}$), calculate the radius of the nucleus of an Aluminum atom ($A = 27$) in cm. If the answer is expressed as $x \times 10^{-13} \text{ cm}$, what is $x$?

Answer: 3.99

💡 Solution & Explanation

The radius $R = R_0 A^{1/3} = 1.33 \times 10^{-13} \times (27)^{1/3} = 1.33 \times 10^{-13} \times 3 = 3.99 \times 10^{-13} \text{ cm}$. Thus, $x = 3.99$. [43, 44]

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