Using Table 40-1 to calculate the energy in MeV for the decay of (a) 226 Ra

Using Table 40-1 to calculate the energy in MeV for the α decay of

(a) ²²⁶Ra 

(b) ²⁴²Pu.

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Table 40-1 Atomic Masses of the Neutron and Selected Isotopes Element Atomic mass, u Symbol Neutron 1.008 665 Hydrogen 1.007 825 2H or D Deuterium 2.014 102 H or T Tritium 3.016 O50 Helium He 3.016 030 He 4.002 603 Lithium Li 3. 6.015 125 7Li 7.016 004 5. 10.012 939 Boron Carbon 12C 6. 12.000 000 13C 13.003 354 6. 14.003 242 14C 6. Nitrogen 13N 13.005 738 14N 14.003 074 7. Oxygen 15.994 915 23Na Sodium 22.989 771 Potassium 3°K 38.963 710 19 S6Fe 55.939 395 Iron 26 Copper 62.929 592 29 107 Ag Silver 47 106.966 094 197 Au Gold 79 196.966 541 Lead 20sPb 82 207.976 650 211.989 629 Polonium 212Po 84 222Rn 86 222.017 531 Radon 226Ra Radium 88 226.025 360 238U Uranium 92 238.048 608 242Pu 242.058 725 Plutonium 94