19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
What type of intermolecular forces are due to the attraction between temporary dipoles and their induced temporary dipoles?
Which of the following molecule can form a hydrogen bond?
Which of the following molecules do show the hydrogen bonding? I. CCl3CH(OH)2 II. o-hydroxy benzoic acid
The boiling point of a substance increases with increase in
Metallic bond is.
Which of the following molecules have same bond order? H2, He2, C2 and O2
Accordingly MO theory (a) O is paramagnetic and bond order is greater than O2. (b) Ois paramagnetic and bond order is less than O2. (c) Ois diamagnetic and bond order is less than O2. (d) Ois diamagnetic and bond orde…
Using MO theory, predict which of the following species has the shortest bond length? (a) O (b) O (c) O (d) O Ans. (d) Sol. As we know, Bond length 1/bond order. In option A, Ohas bond order 2.5 In option B, Ohas bo…
Which one of the following is not paramagnetic?
The number of anti-bonding electron pairs in O molecular ion on the basis of molecular orbital theory is (atomic no. of O is 8):
Which of the following Lewis representation of the molecules NF3, O3 and HNO3 is correct?
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?
Why does the repulsion is greater in lp-lp as compared to lp-bp and bp-bp ?
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?
Bond length if defined as the equilibrium distance between the nuclei of two bonded atoms in a molecule. Bond length can be calculated in the case of
The lowest O – O bond length in the following molecule is :
The compound with the highest degree of covalency is :
In an ionic compound A+X– the degree of covalent bonding is greatest when :
Consider the following statements : I. The smaller the size of cation and larger the size of anion, the greater the covalent character of an ionic bond. II. The greater the charge on the cation the greater will be the…