answersLogoWhite

0


Best Answer

Chlorine naturally occurs with mixed isotopes, and the number is an average of the Atomic Mass of those isotopes, in the proportion they are present.

The isotopes have the same atomic number (protons), but their mass number can be different due to the presence of a different number of neutrons. These atoms of an element having a different number of neutrons are called isotopes.

User Avatar

Wiki User

12y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why does chlorine have fractional atomic mass?
Write your answer...
Submit
Still have questions?
magnify glass
imp