84 Questions
What is the primary reason behind the formation of chemical bonds between atoms?
To achieve a stable state by losing energy
What is the result of weak chemical bonding between constituents in a compound?
The compound undergoes another reaction to form a more stable compound
What is the nature of the force exerted when matter interacts with another form of matter and energy decreases?
Attractive
Who are credited with explaining the formation of chemical bonds successfully in 1916?
Albrecht Kössel and Gilbert Lewis
What is the primary function of chemical bonds in a chemical compound?
To keep the atoms together in the resulting compound
What is the result of strong chemical bonding between constituents in a compound?
The compound becomes more stable
What is the main reason behind the inertness of noble gases?
They have a full outer energy level
Which type of chemical bond involves the transfer of electrons?
Ionic bond
What is the reason behind the strength of an ionic bond?
The difference in charge between the cation and anion
What is the characteristic of a polar covalent bond?
Electrons are shared unequally between the atoms
What is the result of the uneven spacing of electrons in a polar covalent bond?
A partial positive charge on one end and a partial negative charge on the other
What is the primary characteristic of hydrogen bonding?
A weak electrostatic force of attraction
What is the term for the arrangement of ions in an ionic crystal?
Crystal lattice
What is the energy that stabilizes the crystal lattice?
Lattice enthalpy
What type of bond is typically formed between a metal cation and a non-metal anion?
Ionic bond
What is the first step in writing a Lewis structure?
Calculate the number of electrons required for drawing the structure
What is the type of bond formed between oxygen and hydrogen in a water molecule?
Polar covalent bond
What determines the central position in a molecule?
The least electronegative atom
What is the term for the bond formed as a result of strong electrostatic forces of attraction?
Electrovalent bond
What is the unit of measurement for bond length?
Angstrom (A0) or picometer (pm)
What is the term for the amount of energy required to break one mole of bonds?
Bond dissociation enthalpy
What is the relationship between bond dissociation enthalpy and bond strength?
Greater bond dissociation enthalpy, greater bond strength
What is the term for the attraction between atoms as they come closer together?
Electrostatic attraction
What is the purpose of the Lewis structure?
To determine the octet of electrons on each atom
What is the term for the distance between the centres of the nuclei of the two bonded atoms?
Bond length
What method is used to experimentally determine bond length?
All of the above
What type of bond is formed when atoms equally share electrons?
Covalent bond
What is the shape of the dsp2 hybridized orbitals?
Square planar
What is the reason for the paramagnetic nature of oxygen molecules?
Presence of unpaired electrons
What is the name of the theory that explains the formation of oxygen molecules?
Molecular orbital theory
What is the shape of the sp3 hybridized orbitals?
Tetrahedral
What is the result of the overlap of outer orbitals in metals?
Formation of metallic bonds
What is the relationship between bond length and bond dissociation enthalpy?
The greater the bond length, the less the bond dissociation enthalpy.
What is the effect of multiplicity of bonds on bond dissociation enthalpy?
The greater the multiplicity of bonds, the greater the bond dissociation enthalpy.
What is the effect of lone pairs of electrons on bond dissociation enthalpy?
The more the number of lone pairs of electrons, the less the bond dissociation enthalpy.
What is the relationship between bond order and bond length?
The greater the bond order, the less the bond length.
What is the phenomenon in which more than one canonical structure can be written for a species?
Resonance
What is the type of chemical bonding in which bonding pair of electrons are spread over a number of atoms rather than localised between two?
Delocalised bonding
What is the energy difference between the canonical forms and resonance hybrid?
Resonance stabilisation energy
What is the reason for the formation of London dispersion forces?
Temporary charge imbalance in an atom
What is the condition for an atom to be stable?
Having eight electrons in its outermost orbit
What do atoms with less than eight electrons in their outermost orbit tend to do?
React with other atoms to gain electrons
What is the result of the attractive force between atoms, ions, or molecules?
Energy decreases
Why do atoms try to lose their energy?
To gain stability
What is the effect of strong chemical bonding between constituents in a compound?
The compound becomes more stable
What is the result of weak chemical bonding between constituents in a compound?
The compound becomes unstable
What is the term for the force that holds various constituents together and stabilizes them by the overall loss of energy?
Chemical bonding
What is the relationship between the strength of chemical bonds and the stability of the resulting compound?
The stronger the bonds, the more stable the compound
What is the bond enthalpy of the first O-H bond in H2O?
502 KJ/mol
What is the effect of the multiplicity of bonds on bond dissociation enthalpy?
It increases the bond dissociation enthalpy
What is the reason for the weaker bond dissociation enthalpy in polyatomic molecules?
The variation in dissociation energy with each type of bond
What is the phenomenon in which the bonding pair of electrons is spread over a number of atoms rather than localized between two?
Resonance
What is the effect of the size of the atom on the bond length and bond dissociation enthalpy?
The greater the size of the atom, the longer the bond length and the lesser the bond dissociation enthalpy
What is the result of the repulsion between the atoms due to the presence of lone pairs of electrons?
The bond dissociation enthalpy decreases
What is the relationship between the bond order and the stability of the bond?
The greater the bond order, the greater the stability of the bond
What is the type of chemical bonding that involves the overlap of atomic orbitals?
Covalent bond
What type of bond is formed between atoms that lose and gain electrons?
Ionic bond
What is the purpose of hybridized orbitals?
To explain the similarity in bond length, bond angles, structure, shape and magnetic properties of molecules
What is the term for the energy difference between the canonical forms and the resonance hybrid?
Resonance stabilisation energy
What is the shape of the hybridized orbitals formed from the s-subshell and three p-subshell?
Tetrahedral
What is the effect of the presence of lone pairs of electrons on the bond angle?
It decreases the bond angle
What theory explains the paramagnetic nature of oxygen molecules?
Molecular Orbital theory
What is the result of the overlap of outer orbitals in metals?
Electrons do not belong to any particular atom but flow over to all atoms
What is the type of bond formed between atoms that equally share electrons?
Covalent bond
What is the primary reason behind the formation of chemical bonds between atoms?
To achieve a stable electronic configuration
What type of chemical bond is responsible for the properties exhibited by water?
Hydrogen bond
What is the condition for an atom to be stable?
Having a full outermost energy level
What is the result of the transfer of electrons from one atom to another?
Formation of an ionic bond
What is the primary characteristic of a polar covalent bond?
Unequal sharing of electrons
What is the type of chemical bonding that involves the sharing of electrons between atoms?
Covalent bonding
Why do atoms of noble gases neither have a tendency to gain nor lose electrons?
Because they have a full outermost energy level
What is the term for the arrangement of ions in an ionic crystal?
Crystal lattice
What is the primary function of chemical bonds in a chemical compound?
To hold atoms together
What is the term for the bond formed as a result of strong electrostatic forces of attraction?
Electrovalent bond
What is the primary condition for the formation of an ionic bond?
The bond is formed between a metal cation and a non-metal anion
What is the purpose of the Lewis structure?
To represent the arrangement of electrons in a molecule
What is the bond length in a chemical bond?
The sum of the covalent radii of the bonded atoms
What is the bond dissociation enthalpy?
The energy required to break one mole of bonds
What is the result of the attraction between atoms as they come closer together?
The potential energy of the system decreases
What is the central position in a molecule occupied by?
The least electronegative atom
What is the relationship between bond length and bond dissociation enthalpy?
As bond length decreases, bond dissociation enthalpy increases
What is the sum of the valence electrons in a molecule?
The total number of electrons required for drawing the Lewis structure
What is the purpose of step 2 in writing a Lewis structure?
To add or subtract electrons for anions or cations
What is the result of the formation of a triple bond in a molecule?
The bond enthalpy increases
Test your understanding of chemical bonding, a crucial concept in chemistry that deals with the formation of chemical bonds between two or more atoms, molecules, or ions. Learn about the attractive forces that hold constituents together and stabilize them, resulting in a chemical compound. Prepare for your JEE Main 2021 exam with this quiz!
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