Question

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

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

Answer 1

Answer: (B)

Mass of 1 atom of ${}^{12}C=12$ a.m.u.
$=12\times 1.66\times 10^{-24}g$
$=1.9923\times 10^{-23}g$