MCQ
A large difference between the fourth and fifth ionization energies indicates the presence of
- A$5$ valence electrons in an atom
- B$6$ valence electrons in an atom
- ✓$4$ valence electrons in an atom
- D$8$ valence electrons in an atom
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Assertion $A$ : $Image-I$ can be easily reduced using $Zn - Hg / HCl$ to $Image-II$
Reason $R : Zn - Hg / HCl$ is used to reduce carbonyl group to $- CH _2-$ group.
In the light of the above statements, choose the correct answer from the options given below: