Which of the following has the MOST number of atoms (all in Group 1A):

A)5 g Li (lithium) B)80 g Rb (rubidium) C)20 g Na (sodium) D)125 g Cs (cesium) E)45 g K (potassium) F)all have the number of atoms

Which of the following has the LEAST number of molecules:

A) 1 mole of N2 gas B) 1 mole of Cl2 gas C) 1 mole of O2 gas D) 1 mole of Br2 gas E) 1 mope of F2 gas F) all have the same number of molecules