Creating the Periodic Table (2.3.1)

Question 1

• Mendeleev organized the known elements into a table using atomic mass and chemical reactivity and predicted the existence of undiscovered elements.

Answer 1

• Mendeleev organized the known elements into a table using atomic mass and chemical reactivity and predicted the existence of undiscovered elements.

Question 2

• The discovery of argon posed new issues that instigated further changes in the order of the table.

Answer 2

• The discovery of argon posed new issues that instigated further changes in the order of the table.

Question 3

• Arranging the elements on the periodic table according to their atomic numbers resolved all remaining inconsistencies.

Answer 3

• Arranging the elements on the periodic table according to their atomic numbers resolved all remaining inconsistencies.