If two naturally occurring isotopes of an element are 7X15, 7X11 what is the percentage composition of each isotope of X occurring respectively if the average atomic weight accounts to 14 ?
1. 95, 5
2. 80, 20
3. 75, 25
4. 65, 35
Kindly refer to the following link for a similar problem:
https://www.meritnation.com/ask-answer/question/the-average-atomic-mass-of-a-sample-of-an-element-is-35-5u/science/8806671
https://www.meritnation.com/ask-answer/question/the-average-atomic-mass-of-a-sample-of-an-element-is-35-5u/science/8806671