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WorksheetsMRE_Yr 12 Shapes of Molecules
Total questions: 20
Worksheet time: 3600secs
Which of the following does not determine the shape of a molecule?
electron pairs around the central atom
lone pair of electrons on other attached atoms
lone pair of electrons around the central atom
number of attached atoms
Which pairs of electrons around a central atom in a molecule have the greatest repulsion?
lone pair to lone pair
lone pair to bond pair
bond pair to bond pair
bond pair to lone pair
What name is given to the shape shown in the picture?
bent
trigonal planar
triangular
trigonal pyramidal
Which of the following shapes is planar?
What is the bond angle in the shape shown here?
109.5o
120o
107o
104.5o
In which of the following shapes is there atleast a lone pair of electrons around the central atom?
What is the approximate bond angle in a water molecule?
90o
180o
107o
104.5o
What is the approximate bond angle in nitrogen fluoride, NF3?
90o
120o
107o
60o
The 109.5o bond angle around each carbon atom in ethane is mainly due to?
the lone pair of electrons on each carbon atom
the sigma bonds around each carbon atom
the four electron regions around each carbon atom
the sp3 hybridised orbitals on each carbon atom
How many electron regions are around each of the carbon atoms in a molecule of ethene?
3
4
6
2
Which of the following molecules does NOT have a linear shape?
CS2
HCN
OF2
BeF2
In which of the following pairs, do the molecules have a similar shape?
BeCl2 and Cl2O
SCl2 and CO2
BF3 and NH3
BH3 and CH2O
Which species has a shape that is influenced by the presence of one or more lone pairs of electrons around the central atom?
AlCl3
ClF3
IF6+
PCl6–
Which species has one or more bond angle(s) of 90°?
CH4
NH4+
ClF4−
AlCl4−
Which is the most likely bond angle around the oxygen atom in ethanol?
104.5°
109.5°
120°
180°
Which of these species is not planar?
HCHO
CH3+
CH3OH
C2H4
Which of these species has a trigonal planar structure?
PH3
BCl3
H3O+
CH3−
Which one of the following ions has three lone pairs of electrons around the central atom?
BF2-
NH2-
ClF2-
PF6-
Which one of the following is the most likely value for the bond angle α shown in the diagram of SF4?
118°
101°
90°
88°
Which one of the following molecules or ions is pyramidal in shape?
BF3
CH3+
CH3-
SF3-
