Question

Q10. A cation is always smaller than its parent ion why.Compare the ionisation energy of N
and 0.​

Answer 1

Answer:

1 > A cation is always smaller than its parent ion because to form cation an electron donates an electron and thus the electron density on the outermost shell decreases... Thus nucleus can easily attract the valence electrons and thus size reduces

2> Oxygen has low ionisation energy than that of nitrogen. It is due to an electron being added to an already half full orbital in oxygen, which results in electron electron repulsion, which will lower the ionisation energy