16 Facts About Alkali metal

1.

The bond between a water molecule and the Alkali metal ion is a dative covalent bond, with the oxygen atom donating both electrons to the bond.

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2.

Alkali metal stannides are mostly ionic, sometimes with the stannide ion, and sometimes with more complex Zintl ions such as, which appears in tetrapotassium nonastannide .

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3.

All twenty stable alkali metal halides are known; the unstable ones are not known, with the exception of sodium astatide, because of the great instability and rarity of astatine and francium.

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4.

All of the stable alkali metal halides have the formula MX where M is an alkali metal and X is a halogen.

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5.

All the alkali metal halides are soluble in water except for lithium fluoride, which is insoluble in water due to its very high lattice enthalpy.

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Lithium
6.

Alkali metal cations do not usually form coordination complexes with simple Lewis bases due to their low charge of just +1 and their relatively large size; thus the Li ion forms most complexes and the heavier alkali metal ions form less and less .

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7.

Alkali metal peroxides are ionic compounds that are unstable in water.

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8.

Alkali metal sulfides are essentially salts of a weak acid and a strong base, they form basic solutions.

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9.

Lithium is the only Alkali metal that combines directly with nitrogen at room temperature.

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10.

Lithium is the only Alkali metal that reacts directly with carbon to give dilithium acetylide.

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11.

For example, most alkali metal salts are soluble in water, a property which ammonium salts share.

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12.

Tetraalkylammonium hydroxides, like alkali metal hydroxides, are very strong bases that react with atmospheric carbon dioxide to form carbonates.

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13.

The remaining insoluble alkali metal carbonate is then precipitated selectively; the salt is then dissolved in hydrochloric acid to produce the chloride.

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14.

The Alkali metal is produced electrolytically from a mixture of fused lithium chloride and potassium chloride.

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15.

However, these methods are problematic because the potassium Alkali metal tends to dissolve in its molten chloride and vaporises significantly at the operating temperatures, potentially forming the explosive superoxide.

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16.

Some Class D dry powder extinguishers designed for metal fires are effective, depriving the fire of oxygen and cooling the alkali metal.

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