Chapter Twelve ATOMS
12.1 The magnitude of this force is 2 0 1 (2 )( ) 4 eZe F r (12.1) where r is the distance between the α-particle and the nucleus. The force is directed along the line joining the α-particle and the nucleus. The magnitude and direction of the force on an α-particle continuously changes as it approaches the nucleus and recedes away from it.
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