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MHT-CET Chemical Bonding and Molecular Structure — practice questions

Explore 100 free Chemical Bonding and Molecular Structure questions in MHT-CET Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Chemical Bonding and Molecular Structure questions and exercises with answers

Showing questions 1–30 of 100.

Atoms that combine to gain eight valence electrons are following which rule?Read the answer and worked solution →Which scientist introduced the term covalent bond?Read the answer and worked solution →Formal charge compares free-atom valence electrons with what?Read the answer and worked solution →Among possible Lewis structures, which one is usually lowest in energy?Read the answer and worked solution →Which molecule has more than eight electrons around its central atom?Read the answer and worked solution →The van der Waals radius is half the distance between which atoms?Read the answer and worked solution →Which ion has the same bond order as the F2 molecule?Read the answer and worked solution →Which species is isoelectronic with N2 and shares its bond order of 3?Read the answer and worked solution →How are the two oxygen-oxygen bond lengths in ozone best described?Read the answer and worked solution →How does a resonance hybrid's energy compare with its canonical forms?Read the answer and worked solution →Which statement about a molecule showing resonance is correct?Read the answer and worked solution →What is the O-C-O bond angle in the carbonate ion?Read the answer and worked solution →In which molecule is the shared electron pair attracted equally by both atoms?Read the answer and worked solution →Dipole moment is the product of which two quantities?Read the answer and worked solution →In the chemist's crossed-arrow dipole symbol, where does the arrowhead sit?Read the answer and worked solution →VSEPR theory is also named after which two chemists?Read the answer and worked solution →In which year did Gillespie and Nyholm refine the VSEPR idea into a theory?Read the answer and worked solution →What molecular geometry does xenon tetrafluoride, XeF4, have?Read the answer and worked solution →Why is the H-O-H angle in water smaller than the tetrahedral 109.5°?Read the answer and worked solution →In AXE notation, ammonia, NH3, is which type of molecule?Read the answer and worked solution →Iodine heptafluoride, IF7, has which base geometry?Read the answer and worked solution →Which geometry do the five bonding pairs of PCl5 adopt?Read the answer and worked solution →Molecular Li2O is linear, not bent, mainly because its bonds are what?Read the answer and worked solution →What bond angle does the nitronium ion, NO₂⁺, have?Read the answer and worked solution →Who developed hybridisation theory in 1931 to explain methane?Read the answer and worked solution →What percentage s character does each sp3 hybrid orbital have?Read the answer and worked solution →In ethylene, the carbon-carbon pi bond comes from which overlap?Read the answer and worked solution →How many pi bonds join the two carbon atoms in ethyne, C2H2?Read the answer and worked solution →A molecule whose molecular orbitals are all doubly occupied is what?Read the answer and worked solution →In MO theory, bond order is half the difference between which counts?Read the answer and worked solution →

Worked practice questions

Atoms that combine to gain eight valence electrons are following which rule?

  1. Pauli exclusion principle
  2. Octet rule of valence
  3. Aufbau filling principle
  4. Hund's multiplicity rule
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Correct answer: B. Octet rule of valence

Gaining, losing or sharing electrons to reach eight in the valence shell is the octet rule of the electronic theory of bonding.

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Which scientist introduced the term covalent bond?

  1. Walther Kossel
  2. Linus Pauling
  3. Nevil Sidgwick
  4. Irving Langmuir
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Correct answer: D. Irving Langmuir

Langmuir refined the Lewis postulates, dropped the cubical octet and introduced the term covalent bond.

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Formal charge compares free-atom valence electrons with what?

  1. Its antibonding electrons
  2. Its Lewis-assigned electrons
  3. Protons in its nucleus
  4. Its inner shell electrons
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Correct answer: B. Its Lewis-assigned electrons

Formal charge is the free-atom valence electron count minus the electrons assigned to that atom in the Lewis structure.

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