There are two isotopes of chlorine, chlorine-35 and chlorine-37....?

Question

The atomic mass of chlorine given in the periodic table is 35.45. Which of these isotopes of chlorine is most abundant? Explain.

Answer 1

The average atomic mass is given by the ponderate average
35 x + 37 (1 - x) = 35.45 = 35 x + 37 - 37 x = - 2 x + 37
- 2 x = 35.45 - 37 = - 1.55
2 x = 1.55
x = 0.775
77.5 % Chlorine 35 and 22.5 % Chlorine 37

Answer 2

The atomic mass is the weighted average of all of the naturally occurring isotopes of an element. If the average mass is "about 35" then there must be more Cl-35 than Cl-37.

Answer 3

chlorine has 2 isotopes: 35Cl and 37Cl...both isotopes have 17 protons, but chlorine-37 has 2 extra neutrons. chlorine-35 is the more abundant isotope by 75% because if you multiply 75 x 35 and then add 25 x 37 and then divide that by 100 and you will get 35.5! (75x35)+(25x37) ÷ 100 = 35.5. 35.5 is the same as 35.45 rounded..I AM 100%POSITIVE THAT THIS IS THE RIGHT ANSWER!

Answer 4

To use another example to make you think, Hydrogen exists as three isotopes H-1, H-2, and H-3. The atomic mass of H-1 is 1. the atomic mass of H-2 (Deuterium) is 2, and the atomic mass of H-3 (Tritium) is 3.
The atomic mass for "Hydrogen" is listed on the periodic table as 1.008, because only 0.008 (0.8%) of the Hydrogen is H-2 and a negligible amount is H-3.

Answer 5

It's Cl-35 ; because the atomic mass given is more close to the number 35 than 37.

Answer 6

Chlorine 35 is more abundant