which of the following metal on reaction with cold water liberater hydrogen gas but does not float on water unlike calcium due to its vigorous reaction with water 1 sodium na s calcium 3 gold 4 zinec
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Answer:
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Explanation:
Metals like zinc, tungsten, and mercury do not readily react with cold water. On the other hand, alkali metals are the most reactive metals in the periodic table so, when sodium is brought in contact with cold water, it reacts vigorously. The reaction is violent and exothermic.
2Na(s)+2H
2
O(l)→2NaOH(aq)+H
2
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1
Answer :
SODIUM
Explanation:
Sodium is a light and soft metal that reacts vigorously with cold water. The reaction is so violent and exothermic that the evolved hydrogen gas immediately catches fire.
2Na+2H 2O→2NaOH+H2
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