The total number of atoms in a molecule of sucrose is 45. This total is calculated by adding the number of atoms noted in its molecular formula, C12H22O11.
Sucrose, popularly known as table sugar, is a disaccharide composed of glucose and fructose. Over 165 million metric tons of sucrose are consumed around the world each year. This means the average person in the industrial world consumes 33 kilograms of sugar each year, or 24 kilograms in the non-industrial world. Though sucrose plays an important nutritional role, it is also responsible for rising levels of obesity, cardiovascular disease and tooth decay.