Question

Chlorine exists in two forms,Cl - 37 & Cl - 35 but it's atomic mass is 35.5. This indicates the ratio of Cl - 37 & Cl - 35 is approximately

Answer 1

Explanation:

Isotopes are the elements having same atomic number but different atomic mass number.

The two isotopes of chlorine are

Cl37 and Cl35.

Thus they have different atomic mass number.

The average atomic masses are calculated by multiplying atomic masses with their respective relative abundance.

The relative abundance of Cl37 is roughly 24%.

The relative abundance of Cl35 is roughly 76%.

Thus average atomic mass= (37*24/100) +(35*76/100)

=35.5

Also

If the ratio is 1:3

Average atomic mass will be caluclated as

(37*1) +(35*3) / 1+3

=37+105/4

=142/4

=35.5 which is as given.

Hence 1 : 3 is the correct answer.

Answer 2

Answer:

The ratio of Cl - 37 & Cl - 35 is 1:3

Explanation:

thanks