Which atom is the largest? Rb...Li...Na...K...Cs?

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    When you look at the periodic table, the more massive atomic particle of elements are at the leftmost part of the table. Then also, It is also arranged in such a way massive atoms are at the bottom of the periodic table (excluding the lanthanide etc. series ath the bottom, that contains uranium, californium, etc.).

    So, the largest atom is in the bottom left part of the periodic table.

    The answer is Cesium: Cs.

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  • 1 decade ago

    The largest atom is the one that is lowest on the Periodic Table. Remember that each row on the table adds an energy level to the atoms in that row. Since Cesium is in period 6 it is larger than Rubidium in period 5. The other choices aren’t even in the running!

    I hope this helps.

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