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NEET UG Chemical Bonding and Molecular Structure — practice questions — page 3

Explore 126 free Chemical Bonding and Molecular Structure questions in NEET UG 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 61–90 of 126.

Lewis postulated that atoms reach a stable octet by forming:Read the answer and worked solution →Notations that show the valence electrons of an atom are called:Read the answer and worked solution →Inner shell electrons are described as being generally:Read the answer and worked solution →The shape of a molecule, in VSEPR theory, depends on the:Read the answer and worked solution →For VSEPR, molecules are divided into how many categories?Read the answer and worked solution →The VSEPR categories depend on whether the central atom has a:Read the answer and worked solution →VSEPR predicts geometry accurately especially for compounds of the:Read the answer and worked solution →The theoretical basis of VSEPR is described as still a subject of:Read the answer and worked solution →In hybridisation, atomic orbitals combine to form orbitals that are:Read the answer and worked solution →Bond formation uses orbitals that are:Read the answer and worked solution →sp hybridisation is also known as hybridisation that is:Read the answer and worked solution →The two sp hybrid orbitals point in directions that are:Read the answer and worked solution →Dipole moment is usually expressed in units named after:Read the answer and worked solution →Dipole moment is a quantity that is:Read the answer and worked solution →A hydrogen bond, compared with a covalent bond, is:Read the answer and worked solution →True or false on chemical bondingRead the answer and worked solution →Quick picks on chemical bondingRead the answer and worked solution →Match each idea to its meaningRead the answer and worked solution →Inner or outer electronsRead the answer and worked solution →Strength or limit of VSEPRRead the answer and worked solution →Form a hydrogen bondRead the answer and worked solution →Fill the gaps on chemical bondingRead the answer and worked solution →Spot the one that does not fitRead the answer and worked solution →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 →What gives a qualitative measure of an ionic compound's stability?Read the answer and worked solution →The van der Waals radius is half the distance between which atoms?Read the answer and worked solution →

Worked practice questions

Lewis postulated that atoms reach a stable octet by forming:

  1. Fresh isotopes
  2. Chemical bonds
  3. Free radicals
  4. Heavier nuclei
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Correct answer: B. Chemical bonds

1. Atoms short of eight outer electrons must gain, lose or share. 2. They do so by joining with other atoms. 3. So they achieve the octet through chemical bonds. _Source: syllabus Chemistry Part I, Chapter 4, Chemical Bonding and Molecular Structure._

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Notations that show the valence electrons of an atom are called:

  1. Dalton marks
  2. Kossel signs
  3. Lewis symbols
  4. Bohr diagrams
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Correct answer: C. Lewis symbols

1. Only the outer electrons matter for bonding. 2. A simple notation shows just those. 3. These are Lewis symbols. _Source: syllabus Chemistry Part I, Chapter 4, Chemical Bonding and Molecular Structure._

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Inner shell electrons are described as being generally:

  1. Fully involved
  2. Easily shared
  3. Always lost
  4. Not involved
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Correct answer: D. Not involved

1. Inner electrons are well protected inside the atom. 2. Bond formation uses the outer shell. 3. So inner electrons are generally not involved. _Source: syllabus Chemistry Part I, Chapter 4, Chemical Bonding and Molecular Structure._

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