Modern Physics 7 Question 36
37. nucleus, after absorbing energy, decays into two -particles and an unknown nucleus. The unknown nucleus is
(a) nitrogen
(b) carbon
(c) boron
(d) oxygen
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Solution:
- Atomic number of neon is 10 .
By the emission of two
-particles, atomic number will be reduced by 4 . Therefore, atomic number of the unknown element will be
Similarly, mass number of the unknown element will be
Unknown nucleus is carbon (