MolSynapsequestion bank

MolSynapse / Question bank / Chemical Bonding / Lewis structures, octet rule, formal charge

JEE Main levelSingle correct optionDifficulty 2 of 3cb011

The total number of lone pairs on all atoms in the Lewis structure of acetic acid, $CH X_{3} COOH$ , is

A $2$
B $3$
C $4$
D $5$

Answer: C

The carbonyl oxygen (C=O) carries 2 lone pairs and the hydroxyl oxygen carries 2 lone pairs. Carbon and hydrogen atoms have none. Total = 4.

Practice Chemical Bonding More on Lewis structures, octet rule, formal charge

Previous questionNext question

More questions on Lewis structures, octet rule, formal charge