Answer:
Metals on the left of the Periodic Table.
Non-Metals on the top-right, plus Hydrogen.
Argon is perticularly important for the metal industry, being used as an inert gas shield in arc
<span>Answer: option C) pure substance.
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<span>Justification:
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<span>A sharp melting point is a characteristic of pure substances.
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<span>The pure substances are either elements or compounds: they have a unique chemical constitution (kind of elements, number of atoms of each element in the chemical formula, and same chemical bonds).
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</span><span> Other products, this is mixtures (either homogeneus or heterogeneous), being composed of different elements and compounds in different variable ratios, exhibit a range as boiling point. For example the boiling point of the gasoline is about 19°C to 200°C.
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Bromine is an element: you find it in the periodic table, with the atomic number 35, hence a pure substance.
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Since SeO2 dissolves in water to produce selenium acid, it is regarded as an acidic oxide.
The chemical compound having the formula SeO2 is known as selenium dioxide. One of the forms of selenium that is most frequently seen is this colorless solid. 350 °C (662 °F; 623 K). The chemical compound having the formula SeO2 is known as selenium dioxide. One of the forms of selenium that is most frequently seen is this colorless solid. It serves as a catalyst, reagent, oxidizing agent, and antioxidant in lubricating oils. OSHA regulates selenium oxide; thus, it is listed on the Hazardous Substances List. It can be produced chemically by dehydrating selenous acid or chemically by burning selenium in oxygen, nitrogen dioxide, or hydrogen peroxide.
Learn more about Selenium dioxide here-
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Boi if you don’t get ya thing out of here with that who the hell knows that
Gimme the pts please thanks