Which one of the following will have the largest number of atoms?
(i) 1 g Au (s)
(ii) 1 g Na (s)
(iii) 1 g Li (s)
(iv) 1 g of Cl2(g)

Explanation

(i) `"1 g Au"=(1)/(197)" mol "=(1)/(197)xx6.02xx10^(23)" atosm"`
(ii) `"1 g Na"=(1)/(23)" mol "=(1)/(23)xx6.02xx10^(23)" atosm"`
(iii) `"1 g Li"=(1)/(7)" mol "=(1)/(7)xx6.02xx10^(23)" atosm"`
(iv) `"1 g Cl"_(2)=(1)/(71)" mol "=(1)/(71)xx6.02xx10^(23)" molecules"=(2)/(71)xx6.02xx10^(23)" atoms"`