Atomic Structure Practice
10 problems · instant feedback · full explanations
Atoms are mostly empty space with quantized energy levels. Electrons jump between levels, emitting or absorbing photons of exact energies.
Q1.
The gold-foil experiment established which atomic model?
Multiple choice · Easy
Q2.
What is the energy of hydrogen's n=2 level in eV?
Numerical answer (eV) · Medium
Q3.
Heated hydrogen gas produces what kind of spectrum?
Multiple choice · Easy
Q4.
An electron drops from n=2 to n=1 in hydrogen. What is the photon energy?
Numerical answer (eV) · Medium
Q5.
Absorption spectral lines form when:
Multiple choice · Medium
Q6.
How much energy ionizes hydrogen from its ground state?
Multiple choice · Hard
Q7.
No two electrons in an atom can have identical quantum numbers.
True / False · Easy
Q8.
The Bohr model correctly describes all atoms.
True / False · Medium
Q9.
The n=2→1 transition in hydrogen emits light of wavelength about:
Multiple choice · Hard
Q10.
How many electrons fit in the n=2 shell?
Numerical answer (electrons) · Hard