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Chapter 24: Q24.57 P (page 1104)

What is a cation-electron pair, and how does it form?

Short Answer

Expert verified

Cation-electron pair is formed when a nucleus is hit with ionizing radiation.

Step by step solution

01

Cation-electron pair

Cation-electron pair general form is $M^{\begin{array}{l} + \\ . \end{array}}$ It contains both positive charge and a free radical on an atom/molecule.

02

Explanation

All radioactivity causes ionization in surrounding matter, as the emissions collide with atoms and dislodge electrons:

Atom +ionizing radiation $\to {ion}^{+} {+e}^{-}$

From each ionization event, a cation and a free electron result, and the number of such cation-electron pairs produced is directly related to the energy of the incoming ionizing radiation.

Hence When a nucleus is bombarded with ionising radiation, a cation-electron pair forms.

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