Question

Which descriptions apply to isomers? Check all that apply.

a.same molecular formula
b.different molecular formula
c.same structural formula
d.different structural formula
e.only hydrocarbons
f.same number of each kind of atom
g.same geometric arrangement of atoms

Answer 1

Isomers are compounds with the same molecular formula and the same number of each kind of atom, but have different structural formulas. There are various types of isomers, including structural, geometric, and enantiomers, which differ in how the atoms are arranged and connected.

Step-by-step explanation:

Isomers are molecules that have the same molecular formula but differ in the arrangement of their atoms. Among the options provided, the descriptions that apply to isomers are:

• (a) same molecular formula
• (d) different structural formula
• (f) same number of each kind of atom

The key characteristics of isomers include having the identical number and types of atoms (same molecular formula and the same number of each kind of atom) but with atoms connected in different patterns or orientation (different structural formula). Isomers do not necessarily have to be hydrocarbons (eliminating option e), nor do they always have the same geometric arrangement of atoms as geometric isomers specifically refer to isomers differing in spatial arrangement due to, for example, double bonds (eliminating option g). And clearly, isomers must have the same molecular formula, not a different one (eliminating option b), and by definition they cannot have the same structural formula (eliminating option c).

Answer 2

Step-by-step explanation:

Isomers are the molecules which have same molecular formula but different arrangement of atoms.

Or, we can say that isomers have different geometric arrangements.

Thus, we can conclude that following descriptions are applied to isomers.

• same molecular formula
• different structural formula
• same number of each kind of atom