Chemistry 25-09-24
Quiz
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Science
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University
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Practice Problem
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Hard
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which molecule contains six bonding electrons?
C2H4
H2S
NCl3
SF6
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6.93
6.90
6.50
6.07
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which property of an atom does not affect its ionisation energy?
The atomic radius
The number of electron shells
The number of neutrons
The number of protons
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the second ionisation energy of sodium larger than the second ionisation energy of magnesium
The attraction between the nucleus and the outer electron is greater in Na+ than in Mg+
The nuclear charge of Na+ is greater than Mg+
The outer electron of Na+ is more shielded than the outer electron of Mg+
The outer electron of Na is in the same orbital as the as the outer electron of Mg
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
B
C
D
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
B
A
C
D
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which formula represents the empirical formula of a compound
C2H4O
C2H4O2
C6H12
H2O2
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