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NTA Abhyas NEET2020ChemistryChemical KineticsPractice

In the radioactive decay of Z X A , which of the following could be considered as incorrect statement?

Options

  1. Aα - decay involves the decrease of both A and Z by 2
  2. Bβ - decay involves the increase of Z by one, A remaining constant
  3. CK - electron capture results in the decrease of Z by one with no change in A and emission of γ - rays
  4. Dγ - ray emission is followed by the emission of α or β - particles

Correct answer

A. α - decay involves the decrease of both A and Z by 2

Step-by-step solution

α - decay involves the decrease of mass number i.e. Z by 4 u n i t and atomic number i.e. A by 2 unit.

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