MEDIUM
Earn 100

The compound NH3 – BF3 can be easily separated into its compounds because :

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Important Questions on Chemical Bonding and Molecular Structure

HARD
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
The lattice energies of NaCl, NaF, KCl and RbCl follow the order
MEDIUM
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Maximum bond angle at nitrogen is present in which of the following?
MEDIUM
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Among the following molecules, the one with the largest bond angle at the central atom is
EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
What do you understand by a lone pair of electrons?
MEDIUM
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
The total number of dative bonds present in all the following CO, NH4Cl, Al2Cl6, AlH2O6, HNO3 and CO2 is
EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Total number of lone pair of electrons in I3- ion is:
EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
The numbers of lone pair and bond pairs in hydrazine are, respectively:
MEDIUM
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
The compound having longest C-Cl bond is:
EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
The sum of the number of dative bonds present in all the given species are; Al2Cl6, AlH2O6, CO, NH4+
EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Draw the electron dot structure of Ammonium ion. [N=7, H=1]
MEDIUM
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding

Give a reason for the following:

Ionic compounds have a high melting point.

EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Nitrogen shows maximum covalency of 4 where as other heavier elements of the group show higher covalency because.
MEDIUM
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
In ozone molecule, the formal charge on the central oxygen atom is
MEDIUM
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Which of the following compounds contain(s) no covalent bond(s)?

KCl, PH3, O2, B2H6, H2SO4
EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Arrange the following compounds in increasing order of C-OH bond length: methanol, phenol, p -ethoxyphenol
EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
Which of the following pair contains 2 lone pair of electrons on the central atom?
EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
The number of π -bonds and σ -bonds present in naphthalene are respectively
MEDIUM
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
The compound(s) with two lone pairs of electrons on the central atom is (are)
MEDIUM
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
The number of co-ordination bonded water molecules associated with CuSO4.5H2O is _______
EASY
Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Covalent Bonding
What is the nature of the bond between B and O in C2H52OBH3 ?