Elemental chlorine cosists of two isotop...

Elemental chlorine cosists of two isotopes, `""^(37)Cl` and `""^(35)Cl`. Atomic weight of chlorine is 35.5. The ratio of `""^(37)Cl:""^(35)CL` in ordinary chlorine is

`4:1`

`1:4`

`1:3`

`3:1`

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