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secondary 4 | Chemistry
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Why is the answer D?
Date Posted: 3 years ago
Views: 262
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P is in group I so is a metal (sodiun)
Q is in group VI so is non metal (oxygen)
hence PQ will be form ionic compound
physical property of ionic compound
-soluble in water and insoluble in organic solvents
- high boiling and melting point (thats why they are usually solids in room temperature)
structure of ionic compound
- cations and anions are held together crystal lattice by strong electrostatic forces of attraction
because sodium is above carbon in the reactivity series, sodium can be obtained via electrolysis of molten compound
hence
1 is false
2 is true
3 is true
4 is true
Q is in group VI so is non metal (oxygen)
hence PQ will be form ionic compound
physical property of ionic compound
-soluble in water and insoluble in organic solvents
- high boiling and melting point (thats why they are usually solids in room temperature)
structure of ionic compound
- cations and anions are held together crystal lattice by strong electrostatic forces of attraction
because sodium is above carbon in the reactivity series, sodium can be obtained via electrolysis of molten compound
hence
1 is false
2 is true
3 is true
4 is true
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