When Mendeleev proposed his Periodic Table, the noble gases had not been discovered, so they did not play a part in his development of the periodic table.
No. because noble gases were not discovered when Mendeleev proposed his periodic table
Group a.k.a. Family
it added a new group or family.
Column, in the usual modern placement.
Because noble gases were not discovered when Mendeleev formulated his periodic table
He could predict other elements because there was an obvious gap, but he couldn't predict the noble gases because he didn't realize that there was going to be an 18th group since none of them were yet discovered. When he first started organizing the periodic table, the pattern still made sense even without the noble gases.
Noble gases are in the group 18 of the periodic table of Mendeleev.
Because noble gases were not discovered at that time.
Noble gases were not discovered when Mendeleev formulated his periodic table in 1869. Hence noble gases were not shown in the periodic table of 1869.
In 1869, a total of 63 elements had been discovered by. A few were gases. Two were liquids. Most were solid metals.
Because noble gases were not discovered when Mendeleev formulated his periodic table
Noble gases are in the group 18 of the periodic table of Mendeleev.
The noble gases are located in the group 18 of the periodic table of Mendeleev.
He could predict other elements because there was an obvious gap, but he couldn't predict the noble gases because he didn't realize that there was going to be an 18th group since none of them were yet discovered. When he first started organizing the periodic table, the pattern still made sense even without the noble gases.
Because noble gases were not discovered at that time.
Noble gases were not discovered when Mendeleev formulated his periodic table in 1869. Hence noble gases were not shown in the periodic table of 1869.
Noble gases are placed in the group 18 of the periodic table of Mendeleev.
This is the group 18 of the periodic table of Mendeleev.
Noble gases are found in the 18th group in the periodic table.
They were not discovered at that time.
Noble gases are chemical elements placed in the group 18 of the periodic table of Mendeleev.