how do you recognise the bonding within a structure by looking at the name of the compound?

Question

Urgent ..Please help me :)

Answer 1

This question is a little vague, but I can try and help a little. In organic chemistry, the type of bonding between the carbon atoms is clarified by the suffix of the name. For instance, if you have ethane, you have H3C-CH3. The "ane" indicates that there are no multiple bonds and instead there are only single bonds.
If you have ethENE, you have H2C=CH2. The "ene" indicates the presence of at least one double bond.
If you have ethYNE, you have a triple bond (which, thanks to the limitations of the writing on here I can't really show you).

Answer 2

~ane = single bond
~ene = double bond
~yne = triple bond.

Here is a trick I used to remember that for exams etc.

Think of the vowels:
1: a
2: e
3: i

The order in which the rhyming vowel appears corresponds to the number of bonds.

Answer 3

You can't, you need to think of the shape of the molecule and the individual orbital states of each atom.