which isotopes occur in greater cbundance?
2006-10-16 08:58:28 · 5 answers · asked by nikki 1 in Science & Mathematics ➔ Chemistry
Let's say that the frequency of boron-11 is x. This means the frequency of boron-10 is (1-x). The average mass of a sample of boron will reflect the isotope ratio: 10*(1-x) + 11*x. So we can solve:
10*(1-x) + 11*x = 10.81
10 + x = 10.81
x = 0.81
I.e., 81% of boron is boron-11.
2006-10-16 09:01:28 · answer #1 · answered by astazangasta 5 · 0⤊ 0⤋
that's appropriate to their abundances, it skill for calulating the common atomic mass of Boron we could continually evaluate them and accorrding to this atomic mass, Boron-11 has graeter abundance than different isotope
2016-12-26 20:52:40 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The atomic mass is essentially the weighted average of the isotopes. The nearest integer mass is the most common isotope for something that has only two isotopes
2006-10-16 09:01:43 · answer #3 · answered by arbiter007 6 · 0⤊ 0⤋
11.
2006-10-16 09:24:35 · answer #4 · answered by ysk 4 · 0⤊ 0⤋
DOOFUS! Many people explained this to you for the chlorine question...we're not here to do this for you. It is a concept a second grader could understand...which ever it is CLOSER TO! Some people are some dumb....
2006-10-16 09:03:58 · answer #5 · answered by Anonymous · 0⤊ 0⤋