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Chemistry Chemistry Difficulty: Medium

The lightest gas which is non-inflammable is

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The heaviest naturally occurring element is: Consider the following statements 1. Dry ice is the solid form of CO 2 . 2. Dry ice is used primarily as a cooling agent. 3. Water ice is colder than dry ice. Which of the statement(s) given above is/are correct? Molar heat of vaporization of water is_________________? The property of hydrogen which distinguishes it from alkali metals is Which of the following metals are found in free state?