The total number of electrons and the number of electrons involved in the formation of various b...

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The total number of electrons and the number of electrons involved in the formation of various bonds present in one molecule of propanal \( \left(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{CHO}\right) \) are respectively.
[NTSE 2015]
a. 24 and 18
b. 24 and 20
c. 32 and 20
d. 32 and 18
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