Question

What are all the possible masses of cl2 molecules that are made when two chlorine atoms bond together?

Answer 1

The masses of the 2 most common isotopes of Cl are 35 and 37. Therefore we can formulate 3 possible masses of Cl2:

35 + 35 = 70 
35 + 37 = 72 
37 + 37 = 74 

However, Cl 35 is the most common isotope of chlorine of the two therefore it is the most probable that two Cl 35 atoms will combine, so 70 is the most common among all.

Answer 2

Answer:

all the possible masses of $Cl_{2}$ molecules that are made when two chlorine atoms bond together are 70,72 and 74

Explanation:

Chlorine (Cl) has two most common known isotopes these are as follows

Cl-35 and and Cl-37. It means Cl has two possible masses these are 35 and 37.

all the possible masses of $Cl_{2}$ molecules that are made when two chlorine atoms bond together are as follows

it is possible that both the atom in $Cl_{2}$ are  Cl-35 then atomic mass of  $Cl_{2}$  will be

35 + 35 = 70 

it is possible that both the atom in $Cl_{2}$ are  Cl-37 then atomic mass of  $Cl_{2}$  will be

37 + 37 = 74 

it is possible that  $Cl_{2}$ is formed when  Cl-37 and Cl-35 are bond together, then atomic mass of  $Cl_{2}$  will be

35 + 37 = 72