Question

Which one of the following contain largest mass of the atom

Answer 1

Answer:

H2 or hydrogen molecule consist of two hydrogen atoms as chemical formula

Mole(mol)-is an unit of measurement or any other

And one mole equals 6.023*10^23 no of any species i.e.. atoms , molecules , ions etc..

so 0.5 mol H2 will contain(6.023*10^23/2) molecules that is 3.0155*1023 molecules since each molecule consist of two hydrogen atoms, total no of hydrogen atom become

3.1055*10^23*2=6.023*10^23 atoms that is one mole of hydrogen atom