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chemistry
inorganic
group 2 (alkaline metals)
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Cards (21)
What happens to atomic radius as you move down a group?
Atomic radius
increases
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Why does atomic radius increase down a group?
Due to more
electron shells
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How does attraction change as atomic radius increases?
Attraction becomes
weaker
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What trend occurs in first ionisation energy down a group?
First ionisation energy
decreases
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What causes the decrease in first ionisation energy down a group?
Increased
shielding
and
weaker
attraction
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Why is it easier to remove an electron down a group?
Due to
weaker attraction
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What happens to electronegativity as you move down a group?
Electronegativity
decreases
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What is a reason for the decrease in electronegativity down a group?
Larger atomic radius leads to
weaker
attraction
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How does metallic bonding change as atomic size increases?
Metallic bonding
weakens
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What is the exception to the trend in melting points down the group?
Magnesium
is the exception
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What happens to density as you move down a group?
Density
increases
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What causes the increase in density down a group?
Larger
atomic mass
and
larger
volume
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How do reactions with water change down the group?
Reactions become more
volatile
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What type of reactions occur with water down the group?
Redox reactions
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What is the product of magnesium reacting with water?
Magnesium
hydroxide
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What is the role of magnesium hydroxide in the body?
It
neutralizes excess
stomach acid
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What oxidation states do elements change from down the group?
From
0
to
2+
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How does the solubility of hydroxides change down the group?
Solubility of hydroxides
increases
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What trend occurs with the solubility of sulfates down the group?
Solubility
of
sulfates
decreases
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What is the solubility of barium sulfate?
Barium
sulfate
is
insoluble
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What is a common use of barium sulfate in medicine?
Used in
medical
testing
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