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Alkali metals never occur free in nature...

Alkali metals never occur free in nature because

A

they are unstable

B

Their chemical activity is very high

C

Their compounds with other elements are highly stable

D

None of these.

Text Solution

Verified by Experts

The correct Answer is:
B
They are chemically very reactive.
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Give reasons for the following: a. Alkli metals do not occur free in nature. b. Alkali metal salts impart characteristic colour to the flame. c. Caesium is used in photoelectric cell. d. Alkali metals are good reducing agents in aqueous medium.

Which occurs free in nature?

Why are alkali metals not found free in nature ?

Alkali metals are strong reducing agents because

Alkali metals are good reducing agents because

Consider the following statements, S_(1) : Alkali metals are never found in free state in nature. S_(2) : The melting and boiling points of alkali metals are high. S_(3) : The ceasium and potassium both are used as electrodes in photoelectric cells. S^(4) :Alkali metals are normally kept in kerosene oil. and arrange in the order of true/flase.

Assertion (A): Alkali metals do not occur in native state. Reason (R ): Alkali metlas are highly reactive elements.