When Mendeleev organized elements in his periodic table in order of increasing mass, similar elements with similar properties were in the same (Blank)

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Physics

Ashton Walter

5 July, 14:37

When Mendeleev organized elements in his periodic table in order of increasing mass, similar elements with similar properties were in the same (Blank)

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Jadyn Gentry · Answer 1

Similar elements with similar properties were in the same groups and periods for instance lithium (Li) and sodium (Na) are alkaline metals and so belong to the same group (that is group 1). Also Hydrogen (H) and Helium (He) both have only one shell or energy level and so belong to the same period.