MCQ
Which phrase would be incorrect to use
- AA molecular of a compound
- ✓A molecule of an element
- CAn atom of an element
- DNone of these
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$\mathrm{H}_2, \mathrm{He}_2^{+}, \mathrm{O}_2^{+}, \mathrm{N}_2^{2-}, \mathrm{O}_2^{2-}, \mathrm{F}_2, \mathrm{Ne}_2^{+}, \mathrm{B}_2$