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slavikrds [6]
3 years ago
7

1. How did Mosely contribute to the periodic table arrangement?

Chemistry
1 answer:
KIM [24]3 years ago
4 0

Answer:

1. Mosely arranged the elements based on the increasing number of protons, atomic number.

2. According to Moseley, similar properties recur periodically when elements are arranged according to increasing atomic number. Atomic numbers, not weights, determine the factor of chemical properties. Mendeleev ordered his elements in order of their relative atomic mass, and this gave him some problems.

Explanation:

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a person measures the mass of an 8 cm3 block of brown sugar to be 12.9 g. What is the density of the brown sugar.
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