In which of the following compound electrovalent, covalent and co-ordinate bonds are present?

For AB bond if percent ionic character is plotted against electronegativity difference (X_A– X_B), the shape of the curve would look like

Solution

Percent ionic character is given by following equation.% of ionic character = 16(X_A– X_B) + 3.5(X_A – X_B)² From the above relation, it is clear that as soon as(X_A– X_B) increases, % ionic character will also increase.Therefore,curve C show a correct path.

Which does not show resonance :

Solution

Benzene and the compounds having benzene ring show resonance. Hence, ethylamine does not show resonance.

Polarisibility of halide ions increases in the order

Solution

In case of anions having same charge as the size of anion increases, polarisibility of anion also increases.

Which bond angle θ would result in the maximum dipole moment for the triatomic molecule YXY

As compared to covalent compounds, electrovalent compounds generally have

Solution

Ionic compounds generally have high melting and boiling points because of the strong electrostatic force of attraction between oppositely charged ions.Consequently, a considerable amount of energy is required to overcome strong attractive.

Methanol and ethanol are miscible in water due to

Which of the following substances has the greatest ionic character ?

Identify the non polar molecule in the following compounds:

Pauling’s electronegativity values for elements are useful in predicting :

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