Question

Assertion: Phosphorus cannot kept in air.
Reason: Phosphorus spontaneously melts in air.
select (a) if both are correct and reason is the explanation of assertion,(b) if both are correct but reason is not the explanation of assertion, (c) if assertion is correct but reason is false, (d) if both are wrong.

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Answer 1

$\huge\bold\red{Hey!}$

Answer:

(a) both reason and assertion are correct and reason is correct explanation of assertion.

Phosphorus cannot be kept open in the air because it combines with oxygen so easily that it catches fire automatically. For safety, phosphorus is stored under water in chemical laboratories.

Phosphorus will spontaneously ignite if exposed to air. Phosphorus ignites at approximately 86°F (30°C) in air; the ignition temperature is higher when the air is dry.

Hope it helps you...♥

Answer 2

Answer:

(a) is your correct answer because phosphorus can react with air and catching so we kept it