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What happens to the properties of elements across any period of the periodic table?

A) The elements tend to become more metallic in nature since they are increasing in atomic number.
B) The elements get much larger in size because of the addition of more protons and electrons.
C) The properties of the elements gradually change across any period of the periodic table.
D) All of the above are true.

Marked as best answer by Smile92

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Answer: C

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You just saved me a lot of time. ;)