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In the following distintegration ""(92)^...

In the following distintegration `""_(92)^(238)U to ""_(82)^(206)Pb + ` ........ , number of `beta`- particles emitted is

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The correct Answer is:
6
8 `alpha` particles and `6 beta` particles
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In an old rock, the mass ratio of ""_(92)^(238)U to ""_(82)^(206)Pb is found to be 595:103 . The age of the rock is (Mean life of ""_(92)^(238)U is T_(0) ) :

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Initially the earth was a fire-ball, slowly it has cooled to form earth crust and its different layers. At the beginning ""_(92)^(238)U was present and no ""_(82)^(206) Pb was there. With the passage of time, uranium decayed to ""_(82)^(206)Pb The decay process is : ""_(92)^(238)U underset((x alpha, y beta))to ""_(82)^(206)Pb , t_(1//2) of ""^(238)U = 4.5 xx 10^(9) yrs x and y in above decay series are :

Initially the earth was a fire-ball, slowly it has cooled to form earth crust and its different layers. At the beginning ""_(92)^(238)U was present and no ""_(82)^(206) Pb was there. With the passage of time, uranium decayed to ""_(82)^(206)Pb The decay process is : ""_(92)^(238)U underset((x alpha, y beta))to ""_(82)^(206)Pb , t_(1//2) of ""^(238)U = 4.5 xx 10^(9) yrs A sample of rock from south America contains equal number of atoms of ""^(238)U and ""^(206)Pb . The age of the rock will be :

The total no. of alpha and beta - particles emitted in the nuclear reaction : ""_(92)^(238)U to ""_(82)^(214)Pb

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