AP Chemistry
1.7 Periodic Trends
1.6 Photoelectron Spectroscopy
1.5 Atomic Structure and Electron Configuration
The photoelectron spectroscopy (PES) data for nitrogen (\(\text{N}\)) and an unknown neutral Period \(2\) element, \(\text{X}\), are shown in the table below.
Based on the data, which of the following identifies element \(\text{X}\) and provides the correct explanation for why the binding energy of Peak 3 is lower for element \(\text{X}\) than for element \(\text{N}\)?
| Peak | Element \(\text{N}\) Binding Energy (\(\text{MJ/mol}\)) | Element \(\text{X}\) Binding Energy (\(\text{MJ/mol}\)) | Relative Peak Area for Element \(\text{X}\) |
|---|---|---|---|
| 1 | \(39.6\) | \(52.6\) | \(2\) |
| 2 | \(2.45\) | \(3.04\) | \(2\) |
| 3 | \(1.40\) | \(1.31\) | \(4\) |
Based on the data, which of the following identifies element \(\text{X}\) and provides the correct explanation for why the binding energy of Peak 3 is lower for element \(\text{X}\) than for element \(\text{N}\)?
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