Question 8 1.2 pts an atom of bromine has a mass about four times greater than that of an atom of neon. which choice makes the correct comparison of the relative numbers of bromine and neon atoms in 1,000 g of each element?

Neon = app. 20.1795 g/mol 
Bromine = app. 79.904 g/mol 
> 79.904 g/mol / 20.1795 g/mol = 3.96 (Close to 4) 

Using Moles In 1000 g 

1000 g / 20.1795 g/mol = app. 49.555 mol of Ne 
1000 g / 79.904 g/mol = app. 12.515 mol of Br 
> 49.555 mol / 12.515 mol = 3.96 (Close to 4) 

Using Avogadro's Number 

49.555 mol x 6.022x10^23 atoms = app. 2.984x10^25 atoms of Ne 
12.515 mol x 6.022x10^23 atoms = app. 7.537x10^24 atoms of Br 
> 2.984x10^25 / 7.537x10^24 = 3.96 (Close to 4) 

So no matter how you look at it or calculate it, the answer is always the same. 

I hope it helps!

The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic