Question:

The molecular shapes of SF4,CF4 and XeF4 are

Updated On: Aug 15, 2023
  • the same with 2,0 and 1 lone pairs of electrons on the central atoms, respectively.
  • the same with 1,1 and 1 lone pairs of electrons on the central atoms, respectively.
  • the same with 0,1 and 2 lone pairs of electrons on the central atoms, respectively.
  • the same with 1,0 and 2 lone pairs of electrons on the central atoms, respectively.
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The Correct Option is D

Solution and Explanation

The molecular structure of SF4 is square pyramid due to the presence of one lone pair on S atom. CF4 adopts a tetrahedral geometry, and XeF4 has a square planar structure with two lone pairs on the Xe atom.

The correct answer is option (D): the same with 1,0 and 2 lone pairs of electrons on the central atoms, respectively.

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Concepts Used:

Chemical Bonding and Molecular Structure

Such a group of atoms is called a molecule. Obviously, there must be some force that holds these constituent atoms together in the molecules. The attractive force which holds various constituents (atoms, ions, etc.) together in different chemical species is called a chemical bond.

Types of Chemical Bonds:

There are 4 types of chemical bonds which are formed by atoms or molecules to yield compounds. 

  • Ionic Bonds - Ionic bonding is a type of chemical bonding which involves a transfer of electrons from one atom or molecule to another.
  • Covalent Bonds - Compounds that contain carbon commonly exhibit this type of chemical bonding. 
  • Hydrogen Bonds -  It is a type of polar covalent bonding between oxygen and hydrogen wherein the hydrogen develops a partial positive charge
  • Polar Bonds - In Polar Covalent chemical bonding, electrons are shared unequally since the more electronegative atom pulls the electron pair closer to itself and away from the less electronegative atom.

Factors Affecting Bond Enthalpy in Chemical Bonding:

  • Size of the Atom
  • Multiplicity of Bonds
  • Number of Lone Pair of Electrons Present
  • Bond Angle