Question

1 u or 1 amu means

• A. $\frac{1}{12}$th mass of an atom of C-12 atom
• B. Mass of C-12 atom
• C. Mass of O-16 atom
• D. Mass of Hydrogen molecule

Answer 1

The correct option is A

$\frac{1}{12}$th mass of an atom of C-12 atom

$\frac{1}{12}$ th mass of C-12 atoms