An electron in a hydrogen atom in its ground state absorbs 1.5 times as much energy as the minimum r — Atomic Structure Chemistry Question

💡 Solution & Explanation

Minimum required energy is 13.6 eV. Energy absorbed = $1.5 \times 13.6 = 20.4$ eV. Kinetic energy of the emitted electron = $20.4 - 13.6 = 6.8$ eV. Speed $v = \sqrt{\frac{2K}{m}} = \sqrt{\frac{2 \times 6.8 \times 1.6 \times 10^{-19}}{9.1 \times 10^{-31}}} \approx 1.546 \times 10^6$ m/s. Therefore, correct answer is A.