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- 1. Multiple Choice
What are isotopes?
atoms with the same number of protons but a different number of electrons
atoms with the same number of protons but a different number of neutrons
atoms with the same number of neutrons but a different number of protons
none of the above
- 2. Multiple Choice
What evidence do line emission spectra provide for the existence of energy levels in atoms?
different elements have the same t distribution of energy levels and so the same emission spectra
the emission spectra only provide information about the mass of each atom
the emission spectra are only relevant for the lighter elements where there are less electrons
different elements have a distinct distribution of energy levels and so a distinct emission spectra
- 3. Multiple Choice
The Aufbau principle states that:
electrons enter the lowest available energy level
electrons enter one orbital at a time
electrons enter an orbital in the highest energy level available
electrons only enter the lowest energy level if the ones with a higher energy are full
- 4. Multiple Choice
Electrons have a discrete (fixed) amount of energy.
True
False
- 5. Multiple Choice
The lowest available energy state of an electron is called the:
the lowest state
the ground state
the entry state
the fixed state
- 6. Multiple Choice
When atoms receive energy, the electrons:
jump to a higher energy level and fall back to a lower one, emitting energy in the form of light of a specific frequency in the process
jump to a higher energy level and fall back to a lower one, emitting energy with a varied frequency each time
do not absorb the energy, it gets absorbed in the nucleus instead
jump to a higher energy level and fall back to a lower one, emitting energy in the form of heat
- 7. Multiple Choice
Energy levels for an electron in a hydrogen atom are
randomly arranged
evenly spaced
further apart near the nucleus
closer together near the nucleus
- 8. Multiple Choice
What is the electron configuration of an Iron atom (56-Fe)?
1s2 2s2 2p6 3s2 3p6 4s2 3d6
1s2 2s2 2p6 3s2 3p6 3d8
1s2 2s2 2p6 3s2 3p6 4s1 3d7
1s2 2s2 2p6 3s2 3p6 4s2 3d4
- 9. Multiple Choice
How many full p-orbitals are there in an atom of Bromine?
9
11
8
10
- 10. Multiple Choice
How many orbitals are there in the n = 3 energy level of an atom?
4
9
5
6
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