Cell: Structure and Functions
Suppose, we think of fission of a 2656Fe nucleus into two equal fragments of 1328Al. Is the fission energetically possible? Argue by working out Q of the process. Given m (2656Fe) = 55.93494 u and m (1328Al) = 27.98191 u.
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Consider the fission of 92238U by fast neutrons. In one fission event, no neutrons are emitted and the final end products, after the beta decay of the primary fragments, are 58140Ce and 4499Ru. Calculate Q for this fission process. The relevant atomic and particle masses are:m(92238U)=238.05079um(58140Ce)=139.90543um(4499U)=98.90594u.
Name the radiation which is used in carbon dating.
The rest mass of an electron as well so that of positron is 0.51 cMeV. When an electron and positron are annihilate they produce gamma-rays of wavelength(s)
The neutron separation energy is defined as the energy required to remove a neutron from the nucleus. Obtain the neutron separation energy of the nuclei 1327Al from the following data:m(1326Al)=25.986895um(1327Al)=26.981541u
Obtain the binding energy of the nuclei 2656Fe and 83209Bi in units of MeV from the following data:(a) m(2656Fe)=55.934939u(b) m(83209Bi)=208.980388u
Under certain circumstances, a nucleus can decay by emitting a particle more massive than an α-particle. Consider the following decay processes:88223Ra→82209Pb+614C88223Ra→86219Rn+24HeCalculate the Q-values for these decays and determine that both are energetically allowed.
Obtain approximately the ratio of the nuclear radii of the gold isotope 79197Au and the silver isotope 47107Ag .