Correct answer: B. As derived from the energy difference eV, , yielding and therefore . Therefore, correct answer is B.

The value of is | Atomic Structure — Chem-Mantra

Atomic StructuremediumCOMPREHENSIVE

Question

The value of $Z$ is

Answer: B

💡 Solution & Explanation

As derived from the energy difference $E_3 - E_2 = 17.05$ eV, $13.6 Z^2 (5/36) = 17.05$, yielding $Z^2 = 9$ and therefore $Z = 3$. Therefore, correct answer is B.

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