SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The family in the periodic table that contains the most reactive metals is the ____
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Alkaline Earth Metals
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Transition Metals
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Alkali Metals
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Other Metals
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Explanation:
Detailed explanation-1: -Group 1A (or IA) of the periodic table are the alkali metals: hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). These are (except for hydrogen) soft, shiny, low-melting, highly reactive metals, which tarnish when exposed to air.
Detailed explanation-2: -Elements in group 17 are called halogens (see Figure below). They are highly reactive nonmetals with seven valence electrons. The halogens react violently with alkali metals, which have one valence electron.
Detailed explanation-3: -Within the alkali metals family, reactivity increases with increasing atomic number. This makes Francium the most reactive, followed by cesium, rubidium, potassium.
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