Question

What will be the mass of one atom of ${}^{12}C$:

• A. $1amu$
• B. $1.9923\times {10}^{-23}g$
• C. $1.6603\times {10}^{-22}g$
• D. $6amu$

Answer 1

The correct option is B $1.9923\times {10}^{-23}g$

Mass of one mole of ${}^{12}C=12g$
So, mass of 1 atom of ${}^{12}C$,$=\frac{12}{6.022\times {10}^{23}}=1.9923\times {10}^{-23}g$