The atomic radii of the elements in Periodic Table:

The amount of energy given out when an electron is added to an atom is called:

Mendeleev Periodic Table was based upon the:

Long form of Periodic Table is constructed on the basis of:

4th and 5th period of the long form of Periodic Table are called:

Which one of the following halogen has lowest electronegativity?

Along the period, which one of the following decreases:

Transition elements are:

Mark the incorrect statement about ionization energy:

Point out the incorrect statement about electron affinity: