The energy liberated when an electron is added to neutral gaseous atom is

Alkaline earth metals have electron gain enthalpy values as

The tendency of bonded atom to attract the electron pair towards itself is……………

……………. proposed electronegativity of an element as average value of ionization energy and electron affinity

…………….. assigned the electronegativity values for elements on the basis of bond energies.

The most electronegative element and its electronegativity value is

The tendency of an atom to lose electrons is …………..

The tendency of an atom to gain electrons is ……………..

The element at the bottom of a group would be expected to show ……………… metallic character than the element at the top

Which of the following is the most active metal ?

Which of the following ions is larger in size ?

Correct ionization energy order in following set of elements is ……………

The element with negative charge having the electronic configuration 2,8, 8 is

The pair of atomic numbers which belongs to the p-block elements is

Which one of the following decreases in a group from top to bottom ?