Vertical columns are called as -

How many groups are there in the periodic table?

What is the special name given to the 17th group?

Atomic mass is equal to the sum of ____.

Name the most electronegative element of Periodic table ?

Upto which element, the law of octaves was found to be applicable -

Isotopes possess -

Pick out the odd one -

Which out of them is not a halogen?

The standard element chosen for relative atomic mass is __.

An element which is an essential constituent of all organic compounds belongs to ___.

Newlands relation is called

At the time of Mendeleev, the number of elements known was

Element ‘X’ forms a chloride with the formula XCl2, which is a solid with high melting point. X would most likely be in the same group of the periodic table as:

The concept of grouping elements into triads was given by ………

Isotopes belong to the same ……… in the Periodic Table.

Halogens belong to group ……… of the Periodic Table.

Non-metals are located on the ……… side of the Periodic Table

The property of an element in the periodic table depends on its, ________.

The family of elements to which potassium belongs is _________.

The first alkali metal is _________.

Lanthanides and actinides are also called ___________.

The least reactive element in group 17 is ___________.

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