Question

how many hydrogen atoms are in a cycloalkene with one double and 3 carbon atoms

Answer 1

Number of hydrogens atoms are found by using following formula.

CnH2n+2

When there are n number of carbons in alkane then number of hydrogen should be = 2n+2

Lets calculate number of hydrogen should be there with C=3

Number of hydrogen = 2 x 3 + 2 = 8 H

Since there is double bond which we subtract two H from total since double bond is formed by reduction of two hydrogens.

Now we have total H = 8 – 2= 6

When ring is formed then also we have to subtract two H since when ring is formed then there is should be removal of two H

So total number of hydrogens =6-2= 4

Ans : 4 H