MCQ
The number of possible alkynes with molecular formula ${C_5}{H_8}$ is
- A$2$
- ✓$3$
- C$4$
- D$5$

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The order of the energies would be :
$(I)\, CO_3^{-2}$ $(II)\,XeF_4$
$ (III)\,I_3^- $ $(IV)\,NCl_3$
$(V)\,BeCl_2$
