MCQ
Many atoms have non-integral atomic masses because
- Athey have isotopes
- Btheir isotopes have non-integral masses
- Ctheir isotopes have different masses
- ✓Both $A$ and $C$
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${P_4}\xrightarrow{{{O_2}}}'X'$
${P_4}\xrightarrow{{{O_2}(excess)}}'Y'$