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Medeleleev arranged the known chemical elements in a table according to increasing......

A) atomic number
b) number of electrons
c) number of protons
d) mass

1 Answer

4 votes
a- atomic number. Atomic number represents how many protons are in the element, and they are arranged this way in the table in ascending order.

edit- on second thought they weren't technically known as atomic numbers until after he arranged them, so I guess the better answer in this case is d- mass. It's a trick question since today they're considered arranged by atomic number
User Chris Pitman
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