4648756
Description
Question 1
Question
Which of the two elements Mg and Al has a more stable structure?
Answer
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Mg
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Al
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Both have stable structure
Question 2
Question
As we go from left to right in a period, the atomic radius
Answer
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Increases
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Decreases
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Does not change
Question 3
Question
According to the Pauling scale, the most electronegative element is
Answer
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Francium
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Cesium
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Fluorine
Question 4
Question
Electronegativity is defined as
Answer
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A measure of the charge on the electrons surrounding the nucleus in an atom.
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A measure of the tendency of an atom to attract a bonding pair of electrons.
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A measure of the tendency of an atom to attract an electron towards itself.
Question 5
Question
In going from left to right in a period, the electronegativity values
Answer
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Decrease
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Increase
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Increase and then decrease
Question 6
Question
The electronegativity value of Argon is
Answer
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0.7
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3
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No value
Question 7
Question
The structures of elements, as you go from left to right in a period, change as follows
Answer
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Na, Mg and Al have metallic structures. Si has giant covalent structure. P, S, Cl, Ar are simple molecules.
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Na, Mg and Al are simple molecules. Si has metallic structure. P, S, Cl, Ar have a covalent structure.
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All elements have same structure.
Question 8
Question
The electrical conductivity in period 3, as you move from left to right in the period
Answer
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Increases
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Decreases
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Remains constant
Question 9
Question
The forces of attraction between the molecules of Phosphorous, Sulphur, Chlorine and Argon are
Answer
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Van der Waal attractions
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Ionic bonds
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Covalent bonds
Question 10
Question
The melting and boiling points of Phosphorous, Sulphur, Chlorine and Argon as compared to ones of previous elements in the period are
Answer
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Lower
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Higher
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Equal
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