Chemistry Question Bank

Select pair of compounds in which both have different hybridization but have same molecular geometry:

Why does the repulsion is greater in lp-lp as compared to lp-bp and bp-bp ?

The decreasing order of the repulsive interaction of electron pairs is (Here, lp=lone pair, bp=bond pair).

Consider the following statements, 1. The shape of a molecule depends upon the number of valence shell electron pairs (bonded or non-bonded) around the central atom. 2. Pairs of electrons in the valence shell repel on…

Among the following, the molecule with highest dipole moment is :

Which of the following molecules does not have a dipole moment?

The highest dipole moment is of:

Polarity in a molecule and hence the dipole moment depends primarily on electronegatively of the constituent atoms and shape of a molecule. Which of the following has the highest dipole moment?

NH3 and NF3, both the molecules have pyramidal shape with a lone pair of electrons on nitrogen atom. Why does the dipole moment of NH3 is greater than that of NF3? Choose the correct option.

The decreasing order of dipole moments of the molecules HF, H2O, BeF2, NF3 is

Which of the following molecule has dipole moment zero?

The net dipole moment of H2O molecule is

The dipole moment of HF molecule may be represented as (a) (b) (c) (d) Ans. (b) Sol. This arrow symbolizes the direction of the shift of electron density in the molecule.

Dipole moment is usually expressed in Debye units

Dipole moment is usually designated by a Greek letter ‘μ ‘ µ = Q × r Here Q and r represents

The product of the magnitude of the charge and the distance between the centres of positive and negative charge is called.

Which of the following molecules represents resonance

Which of the following is correct representation of canonical forms resonance?

Resonance structures can be written for:

Deviation of O─O bond length in ozone molecule from the normal bond length seems as

The melting point of RbBr is 682ºC while that of NaF is 988ºC. The principal reason for this fact is :

I. When a gas phase atom in its ground state gains an electron, the enthalpy change is called electron gain enthalpy. II. The electron gain process is always exothermic. III. The ionization enthalpy process is always …

The amount of energy released when one mole of ionic solid is formed by packing of gaseous ion is called :

Among the following the maximum covalent character is shown by the compound

In which of the following species the bonds are non- directional?