Which of the following is not correct for condensed structure formulas ?

Options

A. (1) They are easier to write than dash formulas.
B. (2) They impart all the information that is contained in the dash structure once we become familiar with them.
C. (3) In condensed formulas all of the `H` atoms are usually written before the carbon.
D. (4) In fully condensed formulas, all of the atoms that are attached to the carbon are usually written immediately after carbon, listing hydrogens first.

Answer

C

Explanation

Coventionally hydrogens are written immediately after the carbon. For example,
`H-underset(H)underset(|)overset(H)overset(|)(C )-underset(Br)underset(|)overset(H)overset(|)(C)-underset(H)underset(|)overset(H)overset(|)(C )-underset(H)underset(|)overset(H)overset(|)(C)-H`
`CH_(3)underset(br)underset(|)(CH)CH_(2)CH_(3) or CH_(3)CHBrCH_(2)CH_(3)`