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Metals of the first transition series
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Alloy
Organic Compounds
Introduction to the tetravalency of carbon
Alkanes: Homologous series in relation to physical properties
Alkenes: Isomerism (structural and geometric isomerism)
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Aromatic hydrocarbons e.g. benzene - structure, properties and uses
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856
An element with the electron configuration of 1s
2
2s
2
2p
6
would have a combining power of
A.
o
B.
2
C.
6
D.
8
View Answer & Discuss (5)
WAEC 2011
857
Rare gases are stable because they
A.
contain equal number of protons and neutrons
B.
contain more electrons than protons
C.
are chemically active
D.
have octet structure
View Answer & Discuss
WAEC 2011
858
Which of the following elements would produce coloured ions in aqueous solution?
A.
Calcium
B.
lron
C.
Magnesium
D.
Sodium
View Answer & Discuss (2)
WAEC 2011
859
The energy change that accompanies the addition of an electron to an isolated gaseous atom is
A.
bond energy
B.
electronegativity
C.
electron affinity
D.
ionization energy
View Answer & Discuss (5)
WAEC 2011
860
Which of the following hydrohalic acids is the weakest?
A.
HBr
B.
HCI
C.
HF
D.
HI
View Answer & Discuss (9)
WAEC 2011
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