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The Group 1 , Alkali metals.

They all react with oxygen and water to form the hydroxide and release hydrogen.

They all react with oxygen and water to form the hydroxide and release hydrogen.

The reactivity increases down the Group . Lithium gently effervesces. Sodium 'pop's and sparks. Potassium ignites with a bang. Rubidium is moderately explosive. Caesium is violently explosive. Francium is extremely violently explosive. Francium is not reacted in an open laboratory because it is also radio-active.

All the metals in Group 1 are kept under oil; no oxygen present).

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lenpollock

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3y ago
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13y ago

Alkali metals are the most reactive metals (group 1). Alkaline earth metals are in a close second (group 2) As you go along, the elements become less reactive. The least reactive group is the noble gases (group 18).

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14y ago

Alkali metals, group 1 (Sodium through Cesium),

P.S. 'Group' is better than 'Family'

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12y ago

Alkali Metals

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Q: What is an extremely reactive family of elements?
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Whaat is an extremely reactive family of elements?

halogenes


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