Covalent oxide is

Order of Covalent bond;

A. $\mathrm{KF}>\mathrm{KI}; \mathrm{LiF}>\mathrm{KF}$

B. $\mathrm{KF}<\mathrm{KI}; \mathrm{LiF}>\mathrm{KF}$

C. ${\mathrm{SnCl}}_4>{\mathrm{SnCl}}_2; \mathrm{CuCl}>\mathrm{NaCl}$

D. $\mathrm{LiF}>\mathrm{KF}; \mathrm{CuCl}>\mathrm{NaCl}$

E. $\mathrm{KF}<\mathrm{KI}; \mathrm{CuCl}>\mathrm{NaCl}$

Arrange the following in the decreasing order of their covalent character :

(A) $\mathrm{LiCl}$

(B) $\mathrm{NaCl}$

(C) $\mathrm{KCl}$

(D) $\mathrm{CsCl}$

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Which of the following statements are correct ?

(A) Both $\mathrm{LiCl}$ and ${\mathrm{MgCl}}_2$ are soluble in ethanol.

(B) The oxides ${\mathrm{Li}}_2\mathrm{O}$ and $\mathrm{MgO}$ combine with excess of oxygen to give superoxide.

(C) $\mathrm{LiF}$ is less soluble in water than other alkali metal fluorides.

(D) ${\mathrm{Li}}_2\mathrm{O}$ is more soluble in water than other alkali metal oxides.

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Give a reason for the following:

Ionic compounds have a high melting point.

Two elements $\mathrm{A}$ and $\mathrm{B}$ have electronegativities $1.2$ and $3.0$ respectively. The nature of bond between $\mathrm{A}$ and $\mathrm{B}$ would be

The number of following factors which affect the percent covalent character of the ionic bond is______

A) Polarising power of cation

B) Extent of distortion of anion

C) Polarisability of the anion

D) Polarising power of anion

Find out the correct order of ionic character in the following molecules

$\left(\mathrm{i}\right) {\mathrm{SO}}_2$     $\left(\mathrm{ii}\right) {\mathrm{K}}_2\mathrm{O}$     $\left(\mathrm{iii}\right) {\mathrm{N}}_2$    $\left(\mathrm{iv}\right) \mathrm{LiF}$

Arrange the following in increasing order of their covalent character.

(A) ${\mathrm{CaF}}_2$

(B) ${\mathrm{CaCl}}_2$

(C) ${\mathrm{CaBr}}_2$

(D) ${\mathrm{CaI}}_2$

Choose the correct answer from the options given below.