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Question

The alkali metals form strong bases, salts and stable carbonates. Which of the following elements does not belong to this chemical family?

A
Potassium
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B
Sodium
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C
Lithium
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D
Magnesium
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Solution

The correct option is C Magnesium
The alkali metals are a group (column) 1 in the periodic table consisting of the chemical elements lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr).
Hence, magnesium is not an alkali metal.

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