Explain why the metals like Na, K, Ca, and Mg are never found in their free state in nature?

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Solution

Group 1 and Group 2 elements are never found in their free state
Metals in the s-block of the periodic table comprise group 1 and group 2 elements like Na, K, Ca, and Mg and these are never found in their free state in nature.
Because these metals are placed on the top of the activity series.
The metals on the top of the activity series are highly reactive metals.
Reactive metals do not exist in the free state because they have a high affinity for other elements.
Hence, due to the reactive nature of group 1 and group 2 elements, Na, K, Ca, and Mg do exist in their free state in nature.

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Question 61
Explain the following:

(a) Reactivity of $Al$ decreases if it is dipped in ${HNO}_{3}$ .
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(c) $NaCl$ is not a conductor of electricity in the solid state whereas it does conducts electricity in aqueous solution as well as in molten state.
(d) Iron articles are galvanised.
(e) Metals like $Na, K, Ca$ and $Mg$ are never found in their free state in nature.

Name two metals which are found in nature in the free state.

Q. Assertion :Metals like Na, K, Ca and Mg are never found in their free state in nature. Reason: Metals are very reactive elements. So, it combine with other non metal to complete its octet. Metals like Na, K, Ca and Mg are never found in their free state in nature.

Q. Give reasons:
(a) Metals like

Na, K, Ca

and

Mg

are never found in their free state in nature.
(b) Iron loses its lustre over time whereas gold does not.

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