Question

Question 131(iii)

This table shows the mass of one atom for five chemical elements.
Use it to answer the questions given.
$\begin{array}{cc}Elements& Massofatom\left(kg\right)\\ Titanium& 7.95\times {10}^{-26}\\ Lead& 3.44\times {10}^{-25}\\ Silver& 1.79\times {10}^{-25}\\ Lithium& 1.15\times {10}^{-26}\\ Hydrogen& 1.674\times {10}^{-27}\end{array}$
List all the five elements in order from lightest to heaviest.

Answer 1

Arrangement of masses of atoms in same power of 10 is given by
Titanium=$7.95\times {10}^{-26}$
Lead=$34.4\times {10}^{-26}$
Silver=$17.9\times {10}^{-26}$
Lithium=$1.15\times {10}^{-26}$
Hydrogen=$0.1674\times {10}^{-26}$
Thus, we have
34.4 > 17.9 > 7.95 > 1.15 > 0.1674
Arrangement of elements in order from lightest to heaviest is given by
Hydrogen < Lithium < Titanium < Silver < Lead