Chlorine, which has an atomic mass of 35.453 amu, has two naturally occurring isotopes, cl-35 and cl-37. which isotope occurs in greater abundance?

The isotope that occurs in greater abundance is Cl-35

We can obtain the answer to the question by simply calculating the abundance of each isotope.

Let isotope Cl-35 be A

Let isotope Cl-37 be B

From the question given above, the following data were obtained:

Mass of A = 35

Mass of B = 37

Atomic mass of chlorine = 35.453 amu

35.453 = [(35 × A%)/100] + [(37 × (100 – A%))/100]

35.453 = 0.35A% + 37 – 0.37A%

35.453 – 37 =  0.35A% – 0.37A%

–1.547 = –0.02A%

A% = –1.547 / –0.02

Abundance of B (B%) = 100 – 77.35

Isotope Cl-35 has abundance of 77.35%

Isotope Cl-37 has abundance of 22.65%

Therefore, isotope Cl-35 occurs in greater abundance.

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Cl-35 occurs in greater abundance.

The weighted atomic mass lies closer to 35 u than to 37 u, so the Cl-35 isotope must be more abundant.

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >