Question

Avogadro number represents the number of atoms in___.

• A. 12 grams of carbon-12
• B. 1 gram of carbon-12
• C. 32 grams of oxygen
• D. 320 grams of oxygen

Answer 1

The correct option is A

12 grams of carbon-12

Avogadro number represents the number of atoms in 12 grams of carbon-12.

Avogadro's number is defined as the number of elementary particles (molecules, atoms, compounds, etc.) per mole of a substance. It is equal to $6.023\times {10}^{23}$mol ^-1 and is expressed as the symbol N _A. Avogadro's number is a similar concept to that of a dozen or a gross.