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2431
An element Q forms a compound QCI
5
. In which group of the periodic table is Q?
A.
l
B.
lll
C.
V
D.
VII
View Answer & Discuss (2)
WAEC 2009
2432
Which of the statements about the behaviour of the atom is correct?
A.
atomic size decreases down the group
B.
atomic size increases across the period
C.
anions are smaller than the parent atom
D.
cations are smaller than the parent atom
View Answer & Discuss (5)
WAEC 2009
2433
Which of the following properties of covalent compounds is not correct? They
A.
are non-electrolytes
B.
are mostly gaseous and volatile liquids
C.
have low melting point
D.
have high boiling points
View Answer & Discuss (2)
WAEC 2009
2434
Which of the following arrangements is in order of increasing ionization energy?
A.
AI, Si, P, S
B.
Si, AI,S,P
C.
S,P,Si,AI
D.
P, Si,S,AI
View Answer & Discuss
WAEC 2009
2435
In bonded atoms, increase in electronegativity difference,
A.
increases polarity
B.
decreases polarity
C.
has no effect on polarity
D.
brings the polarity to zero
View Answer & Discuss
WAEC 2009
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