Select the most ionic and most covalent compounds respectively from the following: CrO5,Mn2O7,PbO,Fe2O3,SnO2

Question

Select the most ionic and most covalent compounds respectively from the following: CrO5,Mn2O7,PbO,Fe2O3,SnO2 (A) CrO5, Mn2O7 (B) PbO,Mn2O7 (C) CrO5 , Fe2 O3 (D) CrO5, SnO2

Tardigrade Admin · Accepted Answer

As anion is same, the covalent character in ionic compound will depend upon the size and charge on the cation. According to fajan's rule,
Covalent nature ∝ charge on cation

P b O

is most ionic as it has

P b^{2 +}

and

M n_{2} O_{7}

is most covalent as it has

M n^{+ 7}

.

Q. Select the most ionic and most covalent compounds respectively from the following:
$C r O_{5}, M n_{2} O_{7}, P b O, F e_{2} O_{3}, S n O_{2}$

$C r O_{5}, M n_{2} O_{7}$

$P b O, M n_{2} O_{7}$

$C r O_{5}, F e_{2} O_{3}$

$C r O_{5}, S n O_{2}$

As anion is same, the covalent character in ionic compound will depend upon the size and charge on the cation. According to fajan's rule,
Covalent nature ∝ charge on cation
$P b O$ is most ionic as it has $P b^{2 +}$ and $M n_{2} O_{7}$ is most covalent as it has $M n^{+ 7}$ .

Q. Select the most ionic and most covalent compounds respectively from the following: CrO5​,Mn2​O7​,PbO,Fe2​O3​,SnO2​

CrO5​,Mn2​O7​

PbO,Mn2​O7​

CrO5​,Fe2​O3​

CrO5​,SnO2​