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WorksheetsChemistry AS Module 2.2 Foundations
Total questions: 20
Worksheet time: 10mins
How many electrons can the 4th shell hold?
(a)
How many electrons can an f orbital hold?
(a)
What sub-shells are found in the 3rd shell?
s only
s,p only
s,p,d only
s.p,d,f
What is the electronic configuration of oxygen?
1s22s22p3
1s22s12p5
1s22s22p4
1s12s12p6
Predict the type of bonding in sulfur dioxide
Covalent
Ionic
Metalic
Which of the following are properties of an ionic compound?
High melting and boiling point
Electrical conductivity
Soluble in polar solvents
All of the above
How many covalent bonds does carbon form?
1
2
3
4
What is the bond called when one atom supplies both the shared electrons to the covalent bond?
(a)
A substance melts at 1725oC, does not dissolve in any solvent and does not conduct electricity, suggest what type of structure this is.
simple molecule
giant ionic lattice
giant covalent lattice
Metallic
A substance melts at 114oC, dissolves in hexane and does not conduct electricity, suggest what type of structure this is.
giant covalent lattice
simple molecule
giant ionic lattice
metallic
What shape is the molecule PCl5 ?
Trigonal planar
Tetrahedral
Octahedral
Trigonal bipyramid
What is the bond angle in methane?
180
120
109.5
90
What is the shape of AlCl3 ?
(a)
Select the molecules that are polar
Br2
H2O
HBr
CF4
Which has the weakest relative strength?
Permanent dipole-dipole force
Covalent bond
London force
Hydrogen bond
What happens to electronegatively as you move to the right of the periodic table?
Increases
Decreases
Select the molecules that have hydrogen bonding
H2S
HF
NO2
CH3OH
Ice is more dense than water
True
False
How many electrons are there in the outer shell of nitrogen in the ammonium (NH4+) ion?
one less than N in an NH3 molecule
one more than N in an NH3 molecule
The same as N in an NH3 molecule
The same as N in an NH2- ion
How many covalent bonds does oxygen form?
(a)
