12 Questions
Who is the creator of the periodic table of elements?
The thirteen-year-old boy in Siberia
Which group of elements in the periodic table forms negative ions with one negative charge?
Halogens
Which group of elements in the periodic table is known for being unreactive and good conductors of heat and electricity?
Noble gases
Which group of elements in the periodic table are metals that are malleable, can be bent and formed, and are important in chemistry?
Transition metals
Which scientist revolutionized how we see the world?
Dmitri Ivanovich Mendeleev
What did Mendeleev do with the elements to discover their properties?
He sorted them in order of their atomic weights
What did Mendeleev do when he realized that some elements were missing from his table?
He inserted gaps into the table
Who published a paper without a graphical representation of the Periodic Cylinder of the Elements?
de Chancourtois
What was the reason for separating the lanthanides and actinides from the periodic table?
They were hard to fit on a piece of paper
What did Mendeleev deny the existence of?
Atoms
What was the answer to the question 'Why?' after Mendeleev's theories were published?
Electron
What did the periodic table in its current form lack?
Lanthanides and actinides
Test your knowledge of alkali metals and their reactivity in this quiz. Learn about their electron behavior, cation formation, and how chemists extract them from compounds. Challenge yourself and become an expert on these reactive elements.
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