The group 7A elements are called Halogens.
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Answer:
Properties: The melting point of phosphorus (white) is 44.1°C, boiling point (white) is 280°C, specific gravity (white) is 1.82, (red) 2.20, (black) 2.25-2.69, with a valence of 3 or 5. There are four allotropic forms of phosphorus: two forms of white (or yellow), red, and black (or violet).Oct 7, 2019
Atomic Number: 15
Atomic Weight: 30.973762
Explanation:
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Metal and Minerals may have survived 85 years of weather.
Driving cars gives off gases that trap heat in the atmosphere
Answer:
10-9 Millimeters/liters
Explanation:
Because 10-9 M Is more than 10-8 M
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