Question

Which one has largest number of atoms explain also
1g of Au
1g of Na
1g of Li
1g of cl2

Answer 1

Suppose you have a heavy atom, then it's gonna have less particles than a lighter atom in a gram.

So, heavier the element is the less it's number is going to be in a limited amount.

In the case mentioned above,

mass of 1 Au is 197 amu
mass if Na is 23 amu , Li is 6
and mass of Cl2 is (35.5)2 = 71 amu.


Now,

we know that we have 1 gram of every element.


The most massive one will have least particles
.The one with greater mass will have lesser particles and the one with least mass will have more particles.


Here the one with least mass is Lithium. Therefore Lithium will have the largest number of atoms.