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. Elements in the Periodic Table are arranged according to increasing numbers of _____________, which is called the ___________ ______________ on an element key.

User Runaros
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Answer:. Elements in the Periodic Table are arranged according to increasing numbers of ______atoms_______, which is called the ______atomic _____ _______number_______ on an element key.

Explanation: I just learned about this at school!! ; )

User Parthasarathy
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