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Structure of Atom
Bohr Model Energy Levels for Hydrogen-like Species
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Concepts tested
- Energy scaling with atomic number and principal quantum number
All Questions
2024 1 question
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The energy of an electron in the ground state ($n=1$) for $He^+$ ion is $-x$ J, then that for an electron in $n=2$ state for $Be^{3+}$ ion in J is:$E_n = -13.6\frac{Z^2}{n^2}$ eV For $He^+$ (Z = 2), n = 1: $E = -13.6 \times \frac{2^2}{1^2} = -13.6 \times 4 = -54.4$ eV $= -x$ For $Be^{3+}$ (Z = 4), n = 2: $E = -13.6 \times \frac{4^2}{2^2} = -13.6 \times 4 = -54.4$ eV So the energy for $Be^{3+}$ in n = 2 is $-x$ J.