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In the reaction ""(92)"U"^(235)+""(0)n^(...

In the reaction `""_(92)"U"^(235)+""_(0)n^(1) - to ""_(54)X^(142)+""_(36)Kr^(89)+""_(0)n^(1)+alpha`-particle. The number of `alpha` -particles emitted is ______ .

A

Four

B

Three

C

Two

D

One

Text Solution

Verified by Experts

The correct Answer is:
D
Since both the atomic number and number of nucleons must be conserved , `alpha` particles must carry (92 +0) - (54+36+0) = 2 protons and (235 +1) - (142+89+1) = 4 nucleons. These are contained in one `alpha` -particle.
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