1.

The number of b-particles emitted in radioactive change \[_{92}{{U}^{238}}{{\to }_{82}}P{{b}^{206}}{{+}_{2}}H{{e}^{4}}\] is       [KCET 2000]

A.    2    
B.    4
C.    6
D.    10
Answer» D.    10


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