Chemistry - Atomic Structure Question with Solution | TestHub
ChemistryAtomic Structurede-Broglie's Wave EquationMedium2 minQB
ChemistryMediummultiple choice
An electron is added to an alpha particle from infinity and occupies ground state, emitting a photon. Which statements are correct? eV nm.
Options:(select one or more)
Answer:
A, B, C, D
Solution:
An alpha particle is He²⁺; capture into He⁺ ground state releases 13.6Z²=54.4 eV. Photon λ=1240/54.4=22.8 nm, A. Orbit radius=a₀/2, so de Broglie λ=2πr=πa₀=0.529×3.14 Å, B. Bohr speed=4.36×10⁶ m/s=4.36×10⁸ cm/s, D. Current=ev/(2πr)≈4.2×10⁻³ A, C. All four.
Stream:JEESubject:ChemistryTopic:Atomic StructureSubtopic:de-Broglie's Wave Equation
⏱ 2mℹ️ Source: QB
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