Out of the following elements which one do you
expect to be most reactive chemically ?
(a) Be (b) Ca
(c) Ba (d) Sr.
Answers
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Ca is the most reactive
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(C) Ba
Explanation:
Reactivity of alkaline earth metals increases as we move down the group in the periodic table. Barium is at the bottom of the group among the given elements. So Barium is the most chemically reactive element from the given list.
Option C is the answer.
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