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alexgriva [62]
3 years ago
5

Which statement describes how atomic masses are arranged on the periodic table? A. Atomic masses typically increase from right t

o left and from bottom to top. B. Atomic masses typically decrease from left to right and from bottom to top. C. Atomic masses typically decrease from right to left and from top to bottom. D. Atomic masses typically increase from left to right and from top to bottom.
Chemistry
1 answer:
GenaCL600 [577]3 years ago
6 0

Answer:

Explanatio(3) Atomic masses are a weighted average of the naturally occurring isotopes.

(3) Atomic masses are a weighted average of the naturally occurring isotopes. is the best statement for why most atomic masses on the Periodic Table are decimal numbers.

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Carbon-14 and uranium-235 are used for different materials or objects for measuring the age of these materials. These two isotopes are radioactive in nature which means they emit gamma radiations which allow us to find the age of different objects. Carbon-14 has a low half life so it can be used for those objects which are present before thousands of years while uranium-235 is used for materials which are millions of years old due to high half life.

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