Question

Differetiate btween the covalent radii and ionic radii .name the cations that are largest single atom cations .which aout of N3- and O2- ion is bigger in size and why

Answer 1

covalent radii is defined as the half ofintermolecular distance between the two atoms bonded covalently while ionic radii is defined as the half ofdistance between two atoms bonded by ionic bond ionic radii is calculated in case of ionic bond and covalent radii is calculated in case of covalent bond

Answer 2

Explanation:

A covalent radii is defined as half of the distance between internuclear separation of the nuclei of two single bonded atoms.

In a covalent radii, the atoms are just combined by sharing of electrons.

Whereas an ionic radii is also defined as half of the distance between internuclear separation of the nuclei of two single bonded atoms. But in ionic radii the atoms are present in the form of ions and touching each other.

An ionic radii is formed when an atom transfer's its valence electron to another atom.

Electronic configuration of $N^{3-}$ is $1s^{2}2s^{2}2p^{6}$.

Similarly, electronic configuration of $O^{2-}$ is $1s^{2}2s^{2}2p^{6}$.

So, more is the charge on an atom, smaller will be its atomic radii.

Therefore, we can conclude that $O^{2-}$ is bigger in size.