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Periodic table

What are the differences between lanthanides and actinides?

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Last updated by Jill W on 12 Sep 11:29

Answers: 1

Periodic table

Two reasons why is Helium is classified as a noble gas?

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Last updated by Jill W on 06 May 19:37

Answers: 1

Periodic table

What is the name for a column of elements in the periodic table?

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Last updated by anonymous on 21 Nov 22:16

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Periodic table

What is one of the metals you would find in a ni-cad battery?

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Last updated by anonymous on 21 Nov 22:15

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Periodic table

How can you tell which atom has a greater mass?

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Last updated by anonymous on 20 Nov 16:39

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Periodic table

What are the Group 15 elements?

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Last updated by anonymous on 20 Nov 16:26

Answers: 1