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steinawesrugetwer steinawesrugetwer
  • 16-01-2017
  • Chemistry
Answered

The atomic mass of lithium-6 is 6.015123 u. how much energy is required to completely separate the nucleons in a lithium-6 nucleus?

Verified Answer :

MissPhiladelphia
MissPhiladelphia MissPhiladelphia
  • 18-01-2017

What is asked is the binding energy. The formula is
E = c² Δm

In a lithium-6 atom, there are 3 protons and 3 neutrons.
The mass of the nucleus is
3(1.672622) + 3(1.674927) = 10.035344

The binding energy is
E = (3x108)² (10.035344 - 6.015123)
E = 3.618 x 10^17 J

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