Solveeit Logo
Login

Question

Physics Question on Atoms

The value of amu is which of the following?

A

1.57×10−24kg1.57\times 10^{-24}kg

B

1.66×10−24kg1.66\times 10^{-24}kg

C

1.99×10−23kg1.99\times 10^{-23}kg

D

1.99×10−27kg1.99\times 10^{-27}kg

Answer

1.66×10−24kg1.66\times 10^{-24}kg

Explanation

Solution

amu represents atomic mass unit. It is used in place of unified mass unit. 11 amu =1=1 Avogram =1=1 Aston =1=1 Dalton 11 amu =112×=\frac{1}{12} \times mass of C−12C -12 atm =112×1.9924×10−23 g=\frac{1}{12} \times 1.9924 \times 10^{-23} \,g =1.66×10−24 g=1.66×10−2 kg=1.66 \times 10^{-24} \,g =1.66 \times 10^{-2} \,kg