Assertion (A): Preparation of fluorine came across number of difficulties
Reason:(R): It attacks all materials which are used in the preparation (glass, carbon, $H_{2} O$ , metals)

A and R are true, R is correct explanation of A

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A and R are true, R is not correct explanation of A

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A is true, but R is false

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A is false, but R is true

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Solution

The correct option is A A and R are true, R is correct explanation of A
usually glass, carbon, $H_{2} O$ , metals are used in the extraction process. Fluorine is very reactive. It attacks all the above things Therefore preparation of fluorine came across many difficulties

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Assertion (A): Preparation of fluorine came across number of difficultiesReason:(R): It attacks all materials which are used in the preparation (glass, carbon,H2O , metals)

The correct option is A A and R are true, R is correct explanation of Ausually glass, carbon, H2O, metals are used in the extraction process. Fluorine is very reactive. It attacks all the above things Therefore preparation of fluorine came across many difficulties

Assertion (A): Preparation of fluorine came across number of difficulties
Reason:(R): It attacks all materials which are used in the preparation (glass, carbon, $H_{2} O$ , metals)

The correct option is A A and R are true, R is correct explanation of A
usually glass, carbon, $H_{2} O$ , metals are used in the extraction process. Fluorine is very reactive. It attacks all the above things Therefore preparation of fluorine came across many difficulties