Question 1
Which group of elements are known for being highly reactive and forming cations with a +1 charge?
Question 2
Which group of elements are unreactive due to their complete valence electron shells?
Question 3
What significant event in Mendeleev's early life propelled his mother to travel with him to seek education in Moscow and St. Petersburg?
Question 4
Which two groups of elements are known for their similar properties and difficulty in separation?
Question 5
What was one of Mendeleev's significant contributions to the chemistry community through his periodic table?
Question 6
What hardship did Mendeleev face after his mother succeeded in getting him into St. Petersburg?
Question 7
Which property of the elements did the introduction of electrons help scientists better understand?
Question 8
How many elements were known around the time Mendeleev was constructing his periodic table?
Question 9
What inspired Mendeleev to become intensely focused on the periodic relationships among elements?
Question 10
What did Mendeleev's mother do after his father lost his eyesight?
Question 11
Which group of the periodic table does Mendeleev's periodic law help to predict by accurately forecasting their properties before they were discovered?
Question 12
What characteristic of transition metals makes them distinct in the periodic table?
Question 13
Why did Mendeleev believe there were gaps in his periodic table?
Question 14
What was one key reason that Mendeleev's periodic table was more impactful than those of his contemporaries?
Question 15
Who created a different design for the periodic table in the form of a cylindrical, 3D representation?