BIOCHEMISTRY
POLAR AND NONPOLAR MOLECULES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Tetrahedral
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Trigonal pyramidal
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Bent
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Linear
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Detailed explanation-1: -If there are two bond pairs and two lone pairs of electrons the molecular geometry is angular or bent (e.g. H2O).
Detailed explanation-2: -2 Lone Pairs There are two bent geometries based on trigonal planar electronic geometry with one lone pair as exemplified by sulfur dioxide that has a bond angle a bit less than 120oC, and by tetrahedral electronic geometry with two lone pairs, as exemplified by water with 104.5oC bond angle.
Detailed explanation-3: -Example 1: H2O: Water has four electron groups so it falls under tetrahedral for the electron-group geometry. The four electron groups are the 2 single bonds to Hydrogen and the 2 lone pairs of Oxygen. Since water has two lone pairs it’s molecular shape is bent.
Detailed explanation-4: -The shape of the orbitals is tetrahedral. Two of the orbitals contain lone pairs of electrons. The two atoms connected to the central atom form a molecule with a bent shape.