The energy produced ΔE (kJ/mol) during the encounter of a positron with an electron to produce γ rays needs to be determined. β 0 +1 + e 0 -1 → γ 0 0 Concept introduction: In an atom, three sub-atomic particles which are arranged in certain way to make the atom stable. The nuclear attraction force works between electrons and protons due to opposite charges. The force between protons and neutrons holds these particles together. It can be measure by measuring the amount of energy necessary to break these forces. It can be calculated with the help of Einstein’s mass − energy equation: ΔE= m × c 2 The mass defect can be calculated as the difference in the atomic mass and the sum of masses of all atomic particles.

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Chapter 20, Problem 20.115MP

Interpretation Introduction

Interpretation:

The energy produced ΔE (kJ/mol) during the encounter of a positron with an electron to produce γ rays needs to be determined.

β0+1 + e0-1→ γ00

Concept introduction:

In an atom, three sub-atomic particles which are arranged in certain way to make the atom stable. The nuclear attraction force works between electrons and protons due to opposite charges. The force between protons and neutrons holds these particles together. It can be measure by measuring the amount of energy necessary to break these forces.

It can be calculated with the help of Einstein’s mass − energy equation:

ΔE= m × c2

The mass defect can be calculated as the difference in the atomic mass and the sum of masses of all atomic particles.

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