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$\;^{22}Ne\;$ Nucleus after absorbing energy , decays into two $\;\alpha-\;$ particles and an unknown nucleus . The unknown nucleus is


1 Answer

Answer : (b) carbon
Explanation :
Atomic no . of mean is 10
By emission of two $\;\alpha-\;$ particles , atomic no . will be reduced by 4 . Atomic no.of unknown element will be
Similarly , mass no .of unknown element will be
Unknown nucleus is carbon (A=14 , Z=6)
answered Feb 28, 2014 by yamini.v

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