Question

why did hydrogen called an alkali metal​

Answer 1

Answer:

Hydrogen is placed above group in the periodic table because it has ns1 electron configuration like the alkali metals. ... Because hydrogen is a nonmetal and forms H- (hydride anions), it is sometimes placed above the halogens in the periodic table.

Explanation:

Answer 2

Answer:

Hydrogen is a nonmetal and is placed above group in the periodic table because it has ns1 electron configuration like the alkali metals. However, it varies greatly from thealkali metals as it forms cations (H+) more reluctantly than the other alkali metals.

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