Number of Electron, Proton & Neutron Past Year (2006 - 2015) MCQs Structure of Atom Chemistry NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

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An element X has the following isotopic composition:
²⁰⁰X: 90%
¹⁹⁹X: 8.0%
²⁰²X: 2.0%
The weighted average atomic mass of the naturally-occurring element X is closest to:

1. 200 amu
2. 201 amu
3. 202 amu
4. 199 amu

Subtopic: Number of Electron, Proton & Neutron |

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