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Chlorine has two naturally occuring isot...

Chlorine has two naturally occuring isotopes, `""^(35)Cl " and " ""^(37)Cl`. If the atomi mass of Cl is 35.45, the ratio of natural abundance of `""^(35)Cl " and " ""^(37)Cl` is closest to

A

`3.5 :1`

B

`3:1`

C

`2.5:1`

D

`4:1`

Text Solution

Verified by Experts

The correct Answer is:
B
`Mav = (M_(1)n_(1)+M_(2)n_(2))/(n_(1)+n_(2))`
35.45 = `(35n_(1)+37n_(2))/(n_(1)+n_(2))`
`therefore n_(1):n_(2) = 3:1`
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