PES review

What is the purpose of collecting photoelectron spectroscopy data?

• To determine the location of valence electrons in the atom

• To determine the binding energy of all electrons

• To determine the binding energy of valence electrons

• To determine the location of electrons in the atom

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NGSS.HS-PS1-4

Which element has the electron configuration 1s²2s²2p⁶3s²3p⁵?

• chlorine

• fluorine

• sulfur

• phosphorus

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NGSS.HS-PS1-1

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How many valence electrons in the electron configuration 1s²2s²2p⁶3s²3p⁵?

• 3

• 7

• 5

• 2

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many peaks would you see for the PES graph for the element with an electron configuration of 1s²2s²2p⁶3s¹

• 2

• 3

• 4

• 5

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NGSS.HS-PS1-1

What is the electron configuration for this PES graph?

• 1s²2s²2p⁶3s²3p²

• 1s²2s²2p⁶3s²3p¹

• 1s²2s²2p⁶3s²3p³

• 1s²2s²2p⁶3s²

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NGSS.HS-PS1-1

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Which element is represented by this PES graph?

• aluminum

• phosphorus

• sulfur

• silicon

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NGSS.HS-PS1-1

Which element is represented by this PES graph?

• argon

• potassium

• calcium

• scandium

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NGSS.HS-PS1-1

The photoelectron spectra above show the energy required to remove a 1s electron from a nitrogen atom and from an oxygen atom. Which of the following statements best accounts for the 1s peak in Nitrogen being to the less energy than the 1s peak in Oxygen?

• Nitrogen atoms have a half-filled p subshell.

• There are more electron-electron repulsions in oxygen atoms than in nitrogen atoms.

• Electrons in the p subshell of oxygen atoms provide more shielding than electrons in the p sub shell of nitrogen atoms.

• Nitrogen atoms have a smaller nuclear charge than oxygen atoms.

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

The photoelectron spectra shows the binding energy of ALL electrons in a nitrogen atom and from an oxygen atom.

Which of the following statements BEST accounts for the 2p peak in Nitrogen being MORE energy than the 2p peak in Oxygen?

• Nitrogen atoms have a half-filled p subshell.

• There are more electron-electron repulsions in oxygen atoms than in nitrogen atoms.

• Electrons in the p subshell of oxygen atoms provide more shielding than electrons in the p sub shell of nitrogen atoms.

• Nitrogen atoms have a smaller nuclear charge than oxygen atoms.

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NGSS.HS-PS1-1

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The complete photoelectron spectrum for an element is shown above. Which of the following observations would provide evidence that the spectrum is consistent with the atomic model of the element?

• A neutral atom of the element contains exactly two electrons.

• The element does not react with other elements to form compounds.

• In its compounds, the element tends to form ions with a charge of +1.

• In its compounds, the element tends to form ions with a charge of +3.

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NGSS.HS-PS1-1

NGSS.HS-PS1-2