Question

Which one is most ionic?

Solution

Correct option is

MnO

(i) Non metallic oxides are more covalent (or less ionic) as compared to metallic oxides.

(ii) Higher the polarising power of cation (higher for higher oxidation state of similar size cation’s) more will be covalent character.  

(iii) P2O5 will be more covalent than other metallic oxides. 

(iv) Oxidation state of Mn is +7 in Mn2O7, oxidation state of Cr in CrO3 is +6 and oxidation state of Mn is 2 in MnO.  

  MnO is most ionic.  

P2O5, being a non-metallic oxide will definitely be more covalent than the other metallic oxides. Further, we know that higher the polarising power of the cation (highter oxidation state of the similar size cations) more will be the covalent character. Hence Mn is in +7 O.S in Mn2O7, Cr is +6 in CrO3and Mn is +2 in MnO. So MnO is the most ionic and Mn2O7 is the most covalent.  

SIMILAR QUESTIONS

Q1

In which pair of species, both species do have the similar geometry?

Q2

The bond angle in AsH3 is greater than that in

Q3

Which one among the following does not have the hydrogen bond?

Q4

The hybridization state of central atom in PCl5 is

Q5

The molecule having one unpaired electrons is :

Q6

The hydrogen bond is strongest in :

Q7

The species in which the central atom uses sp2 hybrid orbitals in its bonding is :

Q8

The molecule which has zero dipole moment is :

Q9

The molecule which has pyramidal shape is :

Q10

Number of paired electrons in O2 molecule is :