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991
Hydrogen bonds are formed between molecules containing a hydrogen atom bonded to a
A.
strongly electronegative atom
B.
non-polar species
C.
diatomic element
D.
complex ion
View Answer & Discuss (1)
WAEC 2014
992
The two elements
11
X and
19
Y are in the same group because they have the same
A.
valence electrons
B.
ionization energy
C.
number of shell
D.
atomic size
View Answer & Discuss
WAEC 2014
993
Which of the following arrangements is in decreasing order of atomic radius?
A.
Li>Be>C>
B.
Li>B>Be>C
C.
Li>Be>B>C
D.
C>B>Be>Li
View Answer & Discuss (7)
WAEC 2014
994
Which of the following processes is used in food preservation in an industry?
A.
Carbon dating
B.
Ieeadiation of gamma rays
C.
Nuclear fission
D.
Nuclear fusion
View Answer & Discuss (5)
WAEC 2014
995
The electron configuration of \(_{26}Fe^{3+}\) is?
A.
[Ar]4s
2
3d
6
B.
[AR]4s
2
3d
3
C.
[AR]4s
1
3d
4
D.
[AR]4s
0
3d
5
View Answer & Discuss (18)
WAEC 2014
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