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Question

The binding energies of the atoms of elements P and Q are Ep and EQ, respectively. Three atoms of element Q fuse to form one atom of element P. In this process, the energy released is e. The correct relation between EP,EQ and e will be

A
EQ=3EP+e
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B
EQ=3EPe
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C
EP=3EQ+e
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D
EP=3EQe
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Solution

The correct option is B EP=3EQe
Binding energy of 3 Q elements will be 3EQ
So, by energy conservation, binding energy of three P elements is equal to the sum of Q element's binding energy and the released energy.
So, equation is
Ep+e=3EQ
Ep=3EQe

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