Determine the degrees of unsaturation of the following structures:

Determine the index of hydrogen deficiency for the structure given below.

Consider the formula, C₆H₁₃O₂N. Identify the index of hydrogen deficiency of the compound.

Consider the hypothetical compound with the molecular formula C₅H₁₀O₇Cl₂, what is its index of hydrogen deficiency (IHD) or degree of unsaturation?

Lutein has a molecular formula of C₄₀H₅₆O₂. If it has 2 rings and no triple bonds, how many double bonds does it have?

For each molecular formula given below, calculate the number of elements of unsaturation. From the given options, choose the correct structure as an example for each.

(i) C₅H₆Br₂

(ii) C₅H₁₀O

(iii) C₇H₁₀O₂