---
title: "A sample of a naturally occurring element, \\(\\text{X}\\), is vaporized, ionized, and analyzed in a mass spectrometer. The mass spectrum yields two distinct peaks corresponding to \\(\\text{X}^+\\) ions, with the data summarized in the table below.  | Isotope | Isotopic mass (\\(\\text{amu}\\)) | Relative signal intensity | | :— | :— | :— | | \\(^{63}\\text{X}\\) | \\(62.93\\) | \\(7.0\\) | | \\(^{65}\\text{X}\\) | \\(64.93\\) | \\(3.0\\) |  Based on the data in the table, what is the average atomic mass of element \\(\\text{X}\\)?"
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url: "https://nerd-notes.com/ubq/123481/"
date_modified: "2026-09-28T11:59:53+00:00"
---

# A sample of a naturally occurring element, \(\text{X}\), is vaporized, ionized, and analyzed in a mass spectrometer. The mass spectrum yields two distinct peaks corresponding to \(\text{X}^+\) ions, with the data summarized in the table below.

| Isotope | Isotopic mass (\(\text{amu}\)) | Relative signal intensity |
| :— | :— | :— |
| \(^{63}\text{X}\) | \(62.93\) | \(7.0\) |
| \(^{65}\text{X}\) | \(64.93\) | \(3.0\) |

Based on the data in the table, what is the average atomic mass of element \(\text{X}\)?

A sample of a naturally occurring element, \(\text{X}\), is vaporized, ionized, and analyzed in a mass spectrometer. The mass spectrum yields two distinct peaks corresponding to \(\text{X}^+\) ions, with the data summarized in the table below.

| Isotope | Isotopic mass (\(\text{amu}\)) | Relative signal intensity |
| :--- | :--- | :--- |
| \(^{63}\text{X}\) | \(62.93\) | \(7.0\) |
| \(^{65}\text{X}\) | \(64.93\) | \(3.0\) |

Based on the data in the table, what is the average atomic mass of element \(\text{X}\)?

- **A.** \(63.53\text{ amu}\)
- **B.** \(63.93\text{ amu}\)
- **C.** \(64.33\text{ amu}\)
- **D.** \(64.93\text{ amu}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/123481/*