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Average atomic mass Original Scenario-Based Practice

Chemistry · Atomic Structure · Chemistry · Atoms & Subatomic Particles

1 Chemistry practice questions on Average atomic mass. Questions built around original scenarios.

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  1. 1.

    A deep-space probe retrieves a crystalline mineral from an interstellar comet containing a newly discovered element named novium (Nv). Laboratory mass spectrometry reveals that natural novium consists of two stable isotopes: 85Nv^{85}\text{Nv} with an isotopic mass of 84.92 u and an abundance of 60.0%, and 87Nv^{87}\text{Nv} with an isotopic mass of 86.92 u and an abundance of 40.0%. Based on these isotopic data, what is the average atomic mass of novium?

    • A) 85.92 u
    • B) 86.12 u
    • C) 85.42 u
    • D) 85.72 u

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