The noble gases could be placed in Mendeleev’s periodic table later on, without disturbing the original order. Noble gases which are chemically least reactive and more stable could be placed in the periodic table in the form of a separate group.
Which group of elements could be placed in Mendeleev’s periodic table later on, without disturbing the original order? Give reason.
Which group of elements could be placed in Mendeleev’s periodic table later on, without disturbing the original order? Give reason.