The elements which most actively react with water to release hydrogen called as :

least-reactive family of elements

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alkali metals

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halogen family of elements

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noble gases

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family whose oxides form acids in water

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Solution

The correct option is A alkali metals
The elements which most actively react with water to release hydrogen called as alkali metals.
With exception of lithium, other alkali metals react explosively with water. The reaction of lithium with water is less vigorous.
$2 M + 2 H_{2} O \to 2 M^{+} + 2 O H^{-} + H_{2} ↑$

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Similar questions

1

(M O H)

2 M (s) + 2 H_{2} O \to 2 M O H (a q) + H_{2} (g)

1)Why does the size of atoms of halogen family decreases down the group??

2)reactivity of the atoms of halogen family decreases down the group ,why ??

3)why does the atom of halogen family do not react with water and acids??

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