The largest stable nucleus is (A) U-235 (B) U-238 (C) Pb-206 (D) Bi-209

The largest stable nucleus is
(A) U-235
(B) U-238
(C) Pb-206
(D) Bi-209
by

1 Answer

Answer :

(A) U-235
by

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Uranium `._(92)U^(238)` decayed to `._(82)Pb^(206)`. They decay process is `._(92)U^(238) underset((x alpha, y beta))(rarr ._(82)Pb^(206))` `t_(1//2)`

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Thermal nuclear reactors using enriched uranium as fuel contains a maximum of __________ percent fissile material i.e. U-235. (A) 1 (B) 2 (C) 3 (D) 7

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