Question

Which elements were added to the Mendeleev's periodic table later and what was the group number?

Answer 1

Elements that are added to the Mendeleev's periodic table later:

• Without disrupting the original arrangement, Mendeleev's Periodic Table might be filled with inert gases .
• Names of noble gases as helium, neon, and argon are named by scientists.
• There are about $63$ elements were included by Mendeleev in his periodic table of element.
• To categorize elements based on their chemical characteristics, Mendeleev's table of elements was the first systematic attempt.
• This is the primary reason that new elements may be simply added to Mendeleev's Periodic Table without causing havoc.
• Because noble gases are inert and rarely produce hydrides or oxides, these are allocated a zero group and are located at the far left end of Mendeleev's periodic chart.