Question

which of the following show vigorous reaction with water a) he b) k c) p d) au

Answer 1

a)he isnt the answer as it is a noble gas
b)k is the right answer
c) and d) are comparatively less reactive.

Answer 2

Concept

With the Large output of heat the reaction occured is known as vigorous reaction

Explanation

Explaning the Elements turn by turn

Helium is the noble gas so it will not show the vigorous reaction of with water so it is not the correct option.

K means Potassium is the correct option because it will be more reactivewith the large output of heat that means it will have a vigorous reaction

P is Phosphorus which is less reactive hence Phosphorus will not show any reaction

Silver is also very less reactive hence it will also not show any vigorous reaction .

Hence Potassium will have the vigorous reaction

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