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Chemical Bonding and Molecular Structure

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Kossel-Lewis Approach to Chemical Bonding

Subtopic

Kossel-Lewis Approach to Chemical Bonding under Chemical Bonding and Molecular Structure for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    In the Lewis dot structure of the Fluorine molecule (F2F_2), how many lone pairs of electrons are there in the entire molecule?

    A.

    2

    B.

    4

    C.

    6

    D.

    8

  2. 2.

    Which atom will have the same Lewis dot symbol as Nitrogen (NN)?

    A.

    Carbon (CC)

    B.

    Phosphorus (PP)

    C.

    Oxygen (OO)

    D.

    Sulfur (SS)

  3. 3.

    Which of these molecules has a central atom with exactly 8 electrons in its valence shell?

    A.

    BeCl2BeCl_2

    B.

    AlCl3AlCl_3

    C.

    CCl4CCl_4

    D.

    PCl5PCl_5

Download the worksheet for Chemical Bonding and Molecular Structure - Kossel-Lewis Approach to Chemical Bonding to practice offline. It includes additional chapter-level practice questions.

Ionic or Electrovalent Bond

Subtopic

Ionic or Electrovalent Bond under Chemical Bonding and Molecular Structure for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the charge of a Nitrate ion?

    A.

    NO3+NO_{3}^{+}

    B.

    NO3−NO_{3}^{-}

    C.

    NO32−NO_{3}^{2-}

    D.

    NO33−NO_{3}^{3-}

  2. 2.

    The tendency of atoms to achieve eight electrons in their outermost shell is called the:

    A.

    Duplet rule

    B.

    Octet rule

    C.

    Triad rule

    D.

    Hund's rule

  3. 3.

    What is the formula of Aluminum fluoride?

    A.

    AlFAlF

    B.

    AlF2AlF_{2}

    C.

    AlF3AlF_{3}

    D.

    Al3FAl_{3}F

Download the worksheet for Chemical Bonding and Molecular Structure - Ionic or Electrovalent Bond to practice offline. It includes additional chapter-level practice questions.

Bond Parameters

Subtopic

Bond Parameters under Chemical Bonding and Molecular Structure for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    The C−CC-C bond length is longest in which of the following?

    A.

    Ethane (C2H6C_2H_6)

    B.

    Ethene (C2H4C_2H_4)

    C.

    Ethyne (C2H2C_2H_2)

    D.

    Benzene (C6H6C_6H_6)

  2. 2.

    Which bond parameter helps in predicting the polarity of a molecule?

    A.

    Bond order

    B.

    Bond enthalpy

    C.

    Dipole moment

    D.

    Bond length

  3. 3.

    Which of the following is an example of an isoelectronic pair with a bond order of 3?

    A.

    O2,F2O_2, F_2

    B.

    N2,CON_2, CO

    C.

    O2,N2O_2, N_2

    D.

    H2,He2H_2, He_2

Download the worksheet for Chemical Bonding and Molecular Structure - Bond Parameters to practice offline. It includes additional chapter-level practice questions.

VSEPR Theory

Subtopic

VSEPR Theory under Chemical Bonding and Molecular Structure for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following is a postulate of the VSEPR theory?

    A.

    Bonding occurs via orbital overlap

    B.

    Electron pairs try to stay as far apart as possible to minimize repulsion

    C.

    Lone pairs have less repulsion than bond pairs

    D.

    Electrons always form ionic bonds

  2. 2.

    For a central atom with 6 bonding pairs and 0 lone pairs, the shape is:

    A.

    Pentagonal bipyramidal

    B.

    Octahedral

    C.

    Square pyramidal

    D.

    Hexagonal planar

  3. 3.

    The geometry of the NO3−NO_3^- ion is:

    A.

    Trigonal pyramidal

    B.

    Tetrahedral

    C.

    Trigonal planar

    D.

    Bent

Download the worksheet for Chemical Bonding and Molecular Structure - VSEPR Theory to practice offline. It includes additional chapter-level practice questions.

Valence Bond Theory

Subtopic

Valence Bond Theory under Chemical Bonding and Molecular Structure for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following statements is true for hybrid orbitals?

    A.

    They are identical in shape and energy

    B.

    They are less effective in bond formation than pure orbitals

    C.

    They are not directional

    D.

    Their number is always half the number of atomic orbitals mixed

  2. 2.

    In the molecule of Oxygen (O2O_2), the double bond consists of:

    A.

    Two sigma bonds

    B.

    Two pi bonds

    C.

    One sigma and one pi bond

    D.

    One sigma and one coordinate bond

  3. 3.

    According to VBT, at what distance does a stable chemical bond form between two atoms?

    A.

    At infinite distance

    B.

    When attractive forces are equal to repulsive forces

    C.

    When the atoms start to repel each other strongly

    D.

    When the potential energy is at its maximum

Download the worksheet for Chemical Bonding and Molecular Structure - Valence Bond Theory to practice offline. It includes additional chapter-level practice questions.

Hybridization

Subtopic

Hybridization under Chemical Bonding and Molecular Structure for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following orbitals does NOT participate in sp3sp^3 hybridization?

    A.

    s orbital

    B.

    pxp_x orbital

    C.

    pyp_y orbital

    D.

    d orbital

  2. 2.

    What is the percentage of p-character in spsp hybridization?

    A.

    25%

    B.

    33.3%

    C.

    50%

    D.

    75%

  3. 3.

    Which of the following molecules contains a central atom with sp3d2sp^3d^2 hybridization?

    A.

    PCl5PCl_5

    B.

    SF6SF_6

    C.

    BF3BF_3

    D.

    CH4CH_4

Download the worksheet for Chemical Bonding and Molecular Structure - Hybridization to practice offline. It includes additional chapter-level practice questions.

Molecular Orbital Theory

Subtopic

Molecular Orbital Theory under Chemical Bonding and Molecular Structure for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the bond order of a neon molecule (Ne2Ne_2)?

    A.

    0

    B.

    1

    C.

    2

    D.

    0.5

  2. 2.

    Which property decreases as bond order increases?

    A.

    Bond stability

    B.

    Bond enthalpy

    C.

    Bond length

    D.

    Number of shared electrons

  3. 3.

    Calculate the bond order of N2+N_2^+.

    A.

    3

    B.

    2.5

    C.

    2

    D.

    1.5

Download the worksheet for Chemical Bonding and Molecular Structure - Molecular Orbital Theory to practice offline. It includes additional chapter-level practice questions.

Hydrogen Bonding

Subtopic

Hydrogen Bonding under Chemical Bonding and Molecular Structure for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    The molar mass of acetic acid is found to be 120 (instead of 60) in benzene because of:

    A.

    Dissociation

    B.

    Ionization

    C.

    Association via hydrogen bonding

    D.

    Polymerization

  2. 2.

    What happens to the vapor pressure of a liquid when intermolecular hydrogen bonding is present?

    A.

    It increases

    B.

    It decreases

    C.

    It remains the same

    D.

    It becomes zero

  3. 3.

    In the liquid state, HFHF molecules are held together by:

    A.

    Ionic bonds

    B.

    Hydrogen bonds

    C.

    Vander Waals forces

    D.

    Metallic bonds

Download the worksheet for Chemical Bonding and Molecular Structure - Hydrogen Bonding to practice offline. It includes additional chapter-level practice questions.

Chemical Bonding and Molecular Structure - Class 11 Chemistry (CBSE) | Krit.club