1.

    Consider the isoelectronic species N2N_2, COCO, and CN−CN^-. Arrange them in increasing order of bond length.

    A

    N₂ < CO < CN⁻

    B

    CN⁻ < CO < N₂

    C

    CO < N₂ < CN⁻

    D

    N₂ < CN⁻ < CO

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Chemical Bonding and Molecular Structure
    🎯Topic:Bond Parameters
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :1.5 mins
    🔄Ncert Concepts :Bond Length, Bond Order, Isoelectronic Species

    Related Questions

    1.

    Bond energies in NONO, NO+{\rm{N}}{{\rm{O}}^ + } and NO−{\rm{N}}{{\rm{O}}^ - }are such as

    A

    NO−>NO>NO+{\rm{N}}{{\rm{O}}^ - } > {\rm{NO}} > N{{\rm{O}}^ + }

    B

    NO>NO−>NO+{\rm{NO}} > {\rm{N}}{{\rm{O}}^ - } > N{{\rm{O}}^ + }

    C

    NO+>NO>NO−{\rm{N}}{{\rm{O}}^ + } > {\rm{NO}} > {\rm{N}}{{\rm{O}}^ - }

    D

    NO+>NO−>NO{\rm{N}}{{\rm{O}}^ + } > {\rm{N}}{{\rm{O}}^ - } > {\rm{NO}}

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Chemical Bonding and Molecular Structure
    🎯Topic:Bond Parameters
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚡ Time Required :3 mins
    🔄Ncert Concepts :Molecular Orbital Theory, Bond Order, Bond Energy

    2.

    The decreasing order of bond angle is

    A

    $\begin{array}{*{20}{l}}

    {{\rm{N}}{{\rm{O}}_2} > {\rm{NO}}_2^ + > {\rm{NO}}_2^ - }

    \end{array}$

    B

    NO2−>NO2>NO2+{\rm{NO}}_2^ - > N{{\rm{O}}_2} > {\rm{NO}}_2^ +

    C

    NO2+>NO2>NO2−{\rm{NO}}_2^ + > N{{\rm{O}}_2} > {\rm{NO}}_2^ -

    D

    NO2+>NO2−>NO2{\rm{NO}}_2^ + > {\rm{NO}}_2^ - > N{{\rm{O}}_2}

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Chemical Bonding and Molecular Structure
    🎯Topic:Bond Parameters
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚡ Time Required :3 mins
    🔄Ncert Concepts :VSEPR theory, bond angle, lone pair repulsion, resonance

    3.

    The correct increasing order of polarising power is:

    A

    Ca2+<Mg2+<Be2+<K+{\rm{C}}{{\rm{a}}^{2 + }} < M{{\rm{g}}^{2 + }} < B{{\rm{e}}^{2 + }} < {{\rm{K}}^ + }

    B

    Mg2+<Be2+<K+<Ca2+{\rm{M}}{{\rm{g}}^{2 + }} < B{{\rm{e}}^{2 + }} < {{\rm{K}}^ + } < C{{\rm{a}}^{2 + }}

    C

    Be2+<K+<Ca2+<Mg2+{\rm{B}}{{\rm{e}}^{2 + }} < {{\rm{K}}^ + } < C{{\rm{a}}^{2 + }} < M{{\rm{g}}^{2 + }}

    D

    K+<Ca2+<Mg2+<Be2+{{\rm{K}}^ + } < C{{\rm{a}}^{2 + }} < M{{\rm{g}}^{2 + }} < B{{\rm{e}}^{2 + }}

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Chemical Bonding and Molecular Structure
    🎯Topic:Bond Parameters
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :polarizing power, ionic charge, ionic size

    4.

    Bond energies in NONO, NO+{\rm{N}}{{\rm{O}}^ + } and NO−{\rm{N}}{{\rm{O}}^ - } are such as

    A

    NO−>NO>NO+{\rm{N}}{{\rm{O}}^ - } > NO > N{{\rm{O}}^ + }

    B

    NO+>NO−>NO{\rm{N}}{{\rm{O}}^ + } > N{{\rm{O}}^ - } > N{\rm{O}}

    C

    NO>NO−>NO+{\rm{NO}} > N{{\rm{O}}^ - } > N{{\rm{O}}^ + }

    D

    NO+>NO>NO−{\rm{N}}{{\rm{O}}^ + } > NO > N{{\rm{O}}^ - }

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Chemical Bonding and Molecular Structure
    🎯Topic:Bond Parameters
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚡ Time Required :3 mins
    🔄Ncert Concepts :molecular orbital theory, bond order, bond energy

    5.

    If the bond has zero per cent ionic character, the bond is:

    A

    Pure covalent

    B

    Partial covalent

    C

    Partial ionic

    D

    Coordinate covalent

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Chemical Bonding and Molecular Structure
    🎯Topic:Bond Parameters
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :ionic character, covalent bond, pure covalent bond

    6.

    Sodium chloride is soluble in water but not in benzene because

    A

    ΔHhdydration⟨ΔHlatticeenergyinwaterand ΔHhdydration⟩ΔHlatticeenergyinbenzene\Delta {H_{{\rm{hdydration}}}}\left\langle {\Delta {H_{{\rm{lattice energy in water}}}}{\rm{and}}\,\Delta {H_{{\rm{hdydration}}}}} \right\rangle \Delta {H_{{\rm{lattice energy in benzene}}}}

    B

    ΔHhdydration>ΔHlatticeenergyinwaterandΔHhdydration<ΔHlatticeenergyinbenzene\Delta {H_{{\rm{hdydration}}}} > \Delta {H_{{\rm{lattice energy in water}}}}{\rm{and}}\Delta {H_{{\rm{hdydration}}}} < \Delta {H_{{\rm{lattice energy in benzene}}}}

    C

    ΔHhdydration=ΔHlatticeenergyinwaterandΔHhdydration<ΔHlatticeenergyinbenzene\Delta {H_{{\rm{hdydration}}}} = \Delta {H_{{\rm{lattice energy in water}}}}{\rm{and}}\Delta {H_{{\rm{hdydration}}}} < \Delta {H_{{\rm{lattice energy in benzene}}}}

    D

    ΔHHdydration<ΔHlatticeenergyinwaterandΔHHdydration=ΔHlatticeenergyinbenzene\Delta {H_{{\rm{Hdydration}}}} < \Delta {H_{{\rm{lattice energy in water}}}}{\rm{and}}\Delta {H_{{\rm{Hdydration}}}} = \Delta {H_{{\rm{lattice energy in benzene}}}}

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Chemical Bonding and Molecular Structure
    🎯Topic:Bond Parameters
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚡ Time Required :3 mins
    🔄Ncert Concepts :enthalpy of hydration, lattice energy, solubility, intermolecular forces

    7.

    The correct order of bond angles is:

    A

    H2S<NH3<BF3<SiH4{{\rm{H}}_2}{\rm{S}} < N{{\rm{H}}_3} < B{{\rm{F}}_3} < Si{{\rm{H}}_4}

    B

    NH3<H2S<SiH4<BF3{\rm{N}}{{\rm{H}}_3} < {{\rm{H}}_2}{\rm{S}} < Si{{\rm{H}}_4} < B{{\rm{F}}_3}

    C

    H2S<NH3<SiH4<BF3{{\rm{H}}_2}{\rm{S}} < N{{\rm{H}}_3} < Si{{\rm{H}}_4} < B{{\rm{F}}_3}

    D

    H2S<SiH4<NH3<BF3{{\rm{H}}_2}{\rm{S}} < Si{{\rm{H}}_4} < N{{\rm{H}}_3} < B{{\rm{F}}_3}

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Chemical Bonding and Molecular Structure
    🎯Topic:Bond Parameters
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚡ Time Required :3 mins
    🔄Ncert Concepts :VSEPR theory, bond angle, lone pair repulsion, molecular geometry

    8.

    The bond angle in H2S{{\rm{H}}_2}{\rm{S}} (for H−S−H{\rm{H}} - {\rm{S}} - {\rm{H}}) is:

    A

    Same as that of Cl−Be−Cl{\rm{Cl}} - {\rm{Be}} - {\rm{Cl}} in BeCl2BeC{{\rm{l}}_2}

    B

    Greater than H−N−H{\rm{H}} - {\rm{N}} - {\rm{H}} bond angle in NH3{\rm{N}}{{\rm{H}}_3}

    C

    Greater than H−Se−H{\rm{H}} - {\rm{Se}} - H and less than H−O−H{\rm{H}} - {\rm{O}} - {\rm{H}}

    D

    Same as ClSn−Cl{\rm{ClSn}} - {\rm{Cl}} in SnCl2SnC{{\rm{l}}_2}

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Chemical Bonding and Molecular Structure
    🎯Topic:Bond Parameters
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚡ Time Required :3 mins
    🔄Ncert Concepts :VSEPR theory, bond angles, electronegativity, lone pair repulsion

    9.

    The bond order in O2+{\rm{O}}_2^ + is equal to bond order in:

    A

    N2+{\rm{N}}_2^ +

    B

    CN−{\rm{C}}{{\rm{N}}^ - }

    C

    CO{\rm{CO}}

    D

    NO+{\rm{N}}{{\rm{O}}^ + }

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Chemical Bonding and Molecular Structure
    🎯Topic:Bond Parameters
    🎓 Ncert Level:Application
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :molecular orbital theory, bond order, electronic configuration

    10.

    Which property of halogens increases from FF to II ?

    A

    Electronegativity

    B

    First ionization energy

    C

    Bond length in the molecule

    D

    None of the above

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Chemical Bonding and Molecular Structure
    🎯Topic:Bond Parameters
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Periodic trends, Halogens, Electronegativity, Ionization energy, Bond length

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