How many carbon atoms in 1-pentyne?

Answer 1

In the IUPAC nomenclature (naming system), they fall back on Latin numeration.

'Pent' in the name means five(5) , so there ate five atoms of carbon .

Correspondingly , the '-yne' means there is a TRIPLE bonded pair of carbons.

The '1' indicates the position of the carbon at the start of the triple bond.

So 1-pentyne is structured. ' H-C(1)///C(2) - C(3)H2-C(4)H2-C(5)H3

The figure in brackets represents the carbon number in the chain .

NB

Pent = 5

Hex = 6

Hept = 7

Oct = 8

Non = 9

Dec = 10

NNB

ALKANE ; Single bond between two caebons ; C-C

ALKENE ; Double bond between two carbon ; C=C

ALKYNE ; Triple bond between two carbons ; C///C

Note there is only one letter difference between the classifications.

Answer 2

The carbon chain of heptane has seven carbon atoms.

Answer 3

There are 5 carbon atoms in 1-pentyne