Test: AP Chemistry

Dmitri Mendeleev is credited as publisher of the first version of the periodic table similar to the one presently used. He found patterns in the behavior of some elements and grouped them together as such. While there were many benefits of Mendeleev's table that helped to advance our knowledge of chemistry, there are several shortcomings that it still cannot address.


The placement of hydrogen on the periodic table is somewhat misleading. Which of the following statements about hydrogen is false?

Hydrogen is an alkali metal.

Hydrogen can behave as both an alkali metal and as a halogen.

The predominant isotope of hydrogen has 1 proton and no neutrons.

Hydrogen has one valence electron.

1/1 questions


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