1.

If the half-life of an isotope X is 10 years, its decay constant is

Answer»

`6.932 YR^(-1)`
`0.6932 yr^(-1)`
`0.06932 yr^(-1)`
`0.006932 yr^(-1)`

SOLUTION :`K = (0.693)/(t_(1//2)), K = (0.693)/(10) == 0.0693 yr^(-1)`


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