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Practice problem

The Modern Periodic Table — Overview & Importance

By Jasper Brown
The periodic table of elements

Image source: By 2012rc CC BY 2.0, via Wikimedia Commons

The 33 element is in the fourth‾\underline{\phantom{fourth}} period and fifteenth‾\underline{\phantom{fifteenth}} group.

Choose one answer

Type a concept, like “slope” or “photosynthesis”.

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