`._(92)U^(238)` is radioactive and it emits `alpha` and `beta` particles to form `._(82)Pb^(206).` Calculate the number of `alpha` and `beta` particles emitted in this conversion. An ore of `._(92)U^(238)` is found ot contain `._(92)U^(238)` and `_(82)Pb^(206)` in the weight ratio of `1: 0.1.` The half- life -period of `._(92)U^(238)` is `4.5xx 10^(9) yr.` Calculate the age of the ore.
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The correct Answer is:
`(7.12xx10^(8)yr)`
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