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11. When the periodic table was first developed, scientists grouped

elements with similar characteristics in vertical columns. Which
other element has similar characteristics to sodium (Na)?
A. cesium (Cs)
B. bromine (Br)
C. magnesium (Mg)

User Muzafarow
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1 Answer

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The answer would be Cs. It shares the same vertical column as Na and has similar characteristics to Na.
User McAngus
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