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JAMB - Chemistry (1980 - No. 16)

Which ONE of the following statements is true?
All alkali metals salts dissolves with dissociation in water
Most ionic substances are easily vaporized
Ionic substances exist only as liquid
Non-ionic substances are good electrolytes
Nitrogen exists in a trivalent state in ammonium salts

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All alkali metal salts are soluble in water.

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