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What did Henry Moseley change about Mendeleev's Periodic table?

O He ordered the elements by atomic mass.
O He ordered elements with similar properties into columns.
O He ordered elements with similar properties into rows
O He filled in blanks by discovering new elements.

What did Henry Moseley change about Mendeleev's Periodic table? O He ordered the elements-example-1
User Hoserdude
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Answer: A. He Ordered them by atomic mass.

Step-by-step explanation:

User Tida
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