Shapes of Molecules

Description

AS level Chemistry Quiz on Shapes of Molecules, created by Luke Green on 16/05/2017.
Luke Green
Quiz by Luke Green, updated more than 1 year ago
Luke Green
Created by Luke Green over 7 years ago
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Resource summary

Question 1

Question
One molecule of Hydrogen Gas possesses which molecule shape?
Answer
  • Tetrahedral
  • Linear
  • Trigonal Planar

Question 2

Question
Predict the bond angle in a BF3 molecule.
Answer
  • 120 degrees.
  • 180 degrees.
  • 109.5 degrees.

Question 3

Question
Which of these images is an example of a octahedral molecule?
Answer

Question 4

Question
A trigonal bipyramid contains which two angles between it's bonds?
Answer
  • 120 and 90 degrees
  • 109.5 and 90 degrees
  • 180 and 90 degrees
  • 120 and 180 degrees

Question 5

Question
Describe the shape and bond angle of a methane molecule.
Answer
  • Tetrahedral with 109.5 degrees bond angles
  • Trigonal bipyramid with 120 degrees bond angles
  • Linear with 180 degrees bond angles

Question 6

Question
Why does a water molecule have a bond angle of 104.5 degrees?
Answer
  • The molecule is a tetrahedral.
  • The two lone pairs of electrons on the atom of oxygen repel the bonded electron pairs more.
  • The bonded pair of electrons repel the two lone pairs more.

Question 7

Question
How many lone pairs does an ammonia molecule possess?
Answer
  • 2
  • 1
  • 3
  • 5
  • 4

Question 8

Question
Select the correct statement.
Answer
  • Lone Pair/Lone Pair > Bonded Pair/Lone Pair > Bonded Pair/Bonded Pair
  • Bonded Pair/Bonded Pair > Bonded Pair/Lone Pair > Lone Pair/Lone Pair
  • Bonded Pair/Lone Pair < Bonded Pair/Bonded Pair > Lone Pair/Lone Pair

Question 9

Question
How many bonded electron pairs must there be around the central atom of a compound for the molecule's shape to be a Octahedral?
Answer
  • 5
  • 4
  • 6
  • 8

Question 10

Question
Name the theory that explains the reason for the shape of molecules.
Answer
  • The electron repulsion theory
  • Bond theory
  • The theory of shapes
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