Question

Im a nonmetal who is solid at room tempature has 2 letters for my symbol and mass is 79

Answer 1

Answer: Selenium (Se)

Step-by-step explanation:

Selenium is the 34th element on the periodic table and is a reactive nonmetal. It has a molar mass of 78.971g or when rounded 79g. generally room temperature is considered 68 - 72° F or 20 - 22° C and between this range Selenium is a solid.

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