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Question: Answered & Verified by Expert
Alkali metals react with water vigorously to form hydroxides and dihydrogen. Which of the following alkali metals reacts with water least vigorously?
Chemistrys Block Elements
Options:
  • A
    $\mathrm{Li}$
  • B
    $\mathrm{Na}$
  • C
    $\mathrm{K}$
  • D
    $\mathrm{Cs}$
Solution:
1445 Upvotes Verified Answer
The correct answer is:
$\mathrm{Li}$
The reactivity of alkali metals with water increases on moving down the group from $\mathrm{Li}$ to $\mathrm{C}$ s due to increase in electropositive character.

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