In the Nuclear Reaction $^{16}_{8} O + ^{1} _{0}n → X + ^{4}_{2} He$

Q40: The half-life of tritium is 12.3 y.

Q42: When an unstable nucleus decays by emitting

Q55: The activity of a sample reduces

Q58: The unstable isotope ²³⁴Th decays by

Q59: The neutral <span class="ql-formula" data-value="^{27}_{13}"><span

Q60: In the nuclear reaction <span

Q61: In the radioactive decay equation

Q62: An electron and a positron,both essentially at

Q108: The chief hazard of radiation damage to

Q115: The atomic mass unit is defined as<br>A)the