Atomic Structure Review

Why do atoms emit light energy according to the Bohr model?

• Because an electron has been excited.

• Because an electron has fallen into the nucleus.

• Because an electron has fallen to a lower energy state.

• Because a positron has been emitted.

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Arsenic produces a blue flame when heated. Calcium produces an orange-red flame.

Which of the following best explains why this difference occurs?

• Because arsenic can absorb more energy.

• Because the electrons in calcium rotate in a single orbit and the electrons in arsenic

  orbit in two different orbits.

• Because the energy level difference between orbits is greater in arsenic than in

  calcium.

• Because all electrons in arsenic can be excited. This is not true of calcium.

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NGSS.HS-PS1-1

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According to Schrodinger:

• The position of an electron within an atom can be accurately predicted.

• The probability of an electron being at a location in an atom can be accurately

  predicted

• Electrons follow specific permitted orbits.

• Protons follow specific permitted orbits.

Quantum numbers can tell us ________________.

• The probable location of an electron.

• The orbit of an electron.

• The velocity of an electron.

• The energy of an electron.

Which two elements have the same ground-state electron configuration?

• Cu and Ag

• Fe and Cu

• Cl and Ar

• No two elements

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NGSS.HS-PS1-1

The __________ subshell contains seven orbitals.

• f

• s

• d

• p

The angular quantum number (l) designates __________ of orbitals.

• shape

• energy level

• orientation

• spin

Which of these orbitals cannot exist?

• 1s

• 1p

• 2p

• 3d

At maximum, an f-subshell can hold __________ electrons, a d-subshell can hold

__________ electrons, and a p-subshell can hold __________ electrons.

• 14, 10, 6

• 2, 8, 18

• 14, 8, 2

• 2, 6, 10

Which element has an electron configuration that ends in 5s2.?

• Ba

• Sn

• Sr

• Y

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NGSS.HS-PS1-1