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MHT-CET Chemical Bonding and Molecular Structure — practice questions — page 3

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 61–90 of 100.

Nitric oxide cannot satisfy the octet on every atom because it hasRead the answer and worked solution →How many electrons surround sulfur in sulfur dichloride, SCl2?Read the answer and worked solution →How many electrons surround beryllium in BeCl2?Read the answer and worked solution →Which species has an incomplete octet on its central atom?Read the answer and worked solution →What is the formal charge on nitrogen in the NH4+ ion?Read the answer and worked solution →What is the formal charge on a terminal oxygen joined by a single bond in O3?Read the answer and worked solution →The lowest energy Lewis structure generally hasRead the answer and worked solution →Formal charges in a Lewis structure indicateRead the answer and worked solution →Which pairing favours ionic bond formation?Read the answer and worked solution →Lattice enthalpy is the energy to separate one mole of an ionic solid intoRead the answer and worked solution →A qualitative measure of ionic compound stability is itsRead the answer and worked solution →An ionic crystal is held together byRead the answer and worked solution →Ionic crystals form even when IE plus EGE is positive because ofRead the answer and worked solution →Which cation, made of non-metals, still forms ionic compounds?Read the answer and worked solution →Bond length is the equilibrium distance betweenRead the answer and worked solution →Bond angle is the angle between the orbitals containingRead the answer and worked solution →Bond enthalpy is the energy to break one mole of bonds in which state?Read the answer and worked solution →Among N2, O2, H2 and HCl, which has the largest bond enthalpy?Read the answer and worked solution →A larger bond dissociation enthalpy means the bond isRead the answer and worked solution →Breaking the two O–H bonds in water takes 502 and 427 kJ/mol. The average isRead the answer and worked solution →Which species does NOT have bond order 3?Read the answer and worked solution →Which halogen molecule has the longest bond among F2, Cl2, Br2 and I2?Read the answer and worked solution →Which of these carbon bonds has the shortest length?Read the answer and worked solution →The O–O bond lengths in ozone areRead the answer and worked solution →Resonance between canonical forms is shown byRead the answer and worked solution →Canonical forms of one resonance hybrid must have the same positions ofRead the answer and worked solution →In HF the shared electron pair is displaced towardRead the answer and worked solution →The dipole moment of a polyatomic molecule is the ___ sum of bond dipoles.Read the answer and worked solution →CO2 has zero dipole moment because its bond dipolesRead the answer and worked solution →BF3 is nonpolar because its three bond momentsRead the answer and worked solution →

Worked practice questions

Nitric oxide cannot satisfy the octet on every atom because it has

  1. an excess of lone pairs
  2. a triple bond between atoms
  3. two charged atoms inside
  4. an odd number of electrons
Show answer and solution

Correct answer: D. an odd number of electrons

NO has eleven valence electrons, so an odd electron must remain and one atom cannot reach eight.

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How many electrons surround sulfur in sulfur dichloride, SCl2?

  1. 8
  2. 10
  3. 12
  4. 6
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Correct answer: A. 8

Two S–Cl bonds and two lone pairs on sulfur give four pairs, which is a complete octet.

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How many electrons surround beryllium in BeCl2?

  1. 2
  2. 4
  3. 6
  4. 8
Show answer and solution

Correct answer: B. 4

Beryllium has two valence electrons and shares two bonds, so only four electrons surround it.

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