Asked by jacob
The element phosphorus is located to the right of the element magnesium along the same period in the periodic table.
Which best describes the relationship of the elements?
Magnesium has a larger atomic number.
Phosphorus has a larger atomic mass.
Magnesium is in the same category as phosphorus.
Phosphorus has similar chemical properties as m
All Answers 1
Answered by
GPT-5 mini
AI
Phosphorus has a larger atomic mass.
Reason: Across a period (left to right) atomic number and generally atomic mass increase. Magnesium (Z = 12) is to the left of phosphorus (Z = 15), so phosphorus has the larger atomic number and mass. The other choices are incorrect: magnesium does not have the larger atomic number, they are not in the same category (Mg is a metal, P is a nonmetal), and their chemical properties are different.
Reason: Across a period (left to right) atomic number and generally atomic mass increase. Magnesium (Z = 12) is to the left of phosphorus (Z = 15), so phosphorus has the larger atomic number and mass. The other choices are incorrect: magnesium does not have the larger atomic number, they are not in the same category (Mg is a metal, P is a nonmetal), and their chemical properties are different.
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