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The strongest bases are hydroxides  B.  group 1 and group 2 metals.

The strongest bases are hydroxide will be group 1 and and group 2 metals.

What is base?

A base that totally dissociates in such an aqueous solution is referred to as a strong base.

What is group 1?

The elements which have one valence electrons placed in group 1 in the periodic table.

The hydroxides were basic by nature, and so as they move down the group, basic strength rises. This is caused by the weaker M-O bond in MOH, which can break to produce OH- ions in solution, as well as the low ionization energies of certain metals. The basic intensity of the hydroxides grows as the ionization energy drops down the group.

The strongest bases are hydroxide will be group 1 and and group 2 metals.

Therefore, the correct answer will be option (B).

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