List of top Chemistry Questions on Periodic Table asked in TS POLYCET

Which one of the following elements is a noble gas?
Which one of the following has smaller atomic radii?
The predicted properties of eka-boron by Mendeleeff were almost same as of \_\_\_\_\_ which was discovered later.
The law of octaves was proposed by:
Number of elements present in the sixth period of the modern periodic table
Law of octaves was proposed by
Element with atomic number 17 belongs to
Elements possessing atomic numbers, 3, 11, 19, 37 belong to__block.
The element discovered in the place of Eka-Aluminium is
Germanium (Ge) is
4f elements are called as
The total number of inner transition elements in the periodic table is
Identify the Doberiner's triad which has alkali metals.