Question

a fictional element, kendrickium, has three fictional isotopes (gray, red, green). there are 62 gray, 53 red, and 83 green. what is the percent abundance of gray? % check answer

Explanation:

Step1: Calculate total number of isotopes

$62 + 53+83=198$

Step2: Calculate percent abundance of gray

$\frac{62}{198}\times100\approx 31.31\%$

Answer:

$31.31$