Question

If the mass of the single atom is $1.794\times {10}^{-22}$g what is the atomic mass of silver?

• A. 108.95 u
• B. 108.0 u
• C. 106.05 u
• D. 0.110 u

Answer 1

Answer: (B)

108.0 u

Let the atomic mass of the atom be $x$ $g$

$x$ $g$ of element contains $6\times {10}^{23}$ atoms

Weight of $1$ atom= $1.794\times {10}^{22}g$

$\therefore$ Atomic mass$=1.794\times {10}^{22}\times 6.023\times {10}^{23}$

$=10.80\times 10$

$=108.0u$