Why hydrogen is called a metal while it need to gain 1 electron to become stable?

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Solution

Hydrogen is a non-metal.
In the periodic table it is placed in the first group with alkali metals but it is not a part of alkali metals.

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Why hydrogen is called a metal while it need to gain 1 electron to become stable?

Hydrogen is a non-metal. In the periodic table it is placed in the first group with alkali metals but it is not a part of alkali metals.

Hydrogen is a non-metal.
In the periodic table it is placed in the first group with alkali metals but it is not a part of alkali metals.