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# Tenth Grade (Grade 10) Quantum Physics and the Atom Questions

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Grade 10 Quantum Physics and the Atom

This question is a part of a group with common instructions. View group »

Select the correct electron configuration for silicon, atomic number 14.
1. $1s^2 2s^2 2p^6 3s^2 3p^6 4s^2$
2. $1s^2 2s^2 2p^4 3s^2 3p^4$
3. $1s^2 2s^2 2p^6 3s^2 3p^2$
Grade 10 Quantum Physics and the Atom

This question is a part of a group with common instructions. View group »

Grade 10 Quantum Physics and the Atom
What is meant by the ground state of an atom?
1. The ground state of an atom is when it has lost all energy.
2. The ground state of an atom is its highest possible energy state.
3. The ground state of an atom is when it has not been charged with energy.
4. The ground state of an atom is its lowest possible energy state.
Grade 10 Quantum Physics and the Atom
How does the energy of a principal energy level depend on the value of n? Does a higher value of n mean a higher or lower energy?
1. The lower the value of the principal energy level, n, the higher the energy of the principal energy level.
2. The higher the value of the principal energy level, n, the higher the energy of the principal energy level.
3. The lower the value of the principal energy level, n, the lower the energy of the principal energy level.
4. The higher the value of the principal energy level, n, the lower the energy of the principal energy level.
Grade 10 Quantum Physics and the Atom
What are the differences between the 2s orbital and the 1s orbital of hydrogen? How are they similar? (Select all that apply.)
1. The 2s orbital is shaped like dumbbells, whereas the 1s orbital is spherical.
2. The 2s orbital is more oblong than the 1s orbital.
3. The 2s orbital is larger than the 1s orbital.
4. The 2s orbital is smaller than the 1s orbital.
5. The 2s orbital is similar in shape to the 1s orbital.
6. The 2s orbital is the same size as the 1s orbital.
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