Question

Define the following terms:

(d) Gram atomic mass(gram atom)

Answer 1

Gram-atomic Mass Or Gram Atom

• When the numerical value of the atomic mass of an element is expressed in grams, the value becomes gram-atomic mass or gram atom.
• Example: The atomic mass of oxygen is 16 u while the gram-atomic mass or gram atom of oxygen is 16 g.
• Similarly, the gram-atomic masses of hydrogen, chlorine, and nitrogen are 1.008 g, 35.5 g, and 14.0 g respectively.
• Gram atomic mass or gram atom of every element consists of the same number of atoms called Avogadro's number.
• The value of Avogadro's number is $6.02\times {10}^{23}$.