Electron Affinity is maximum in:

1. Mg
2. Ar
3. Li
4. Br

State the term : The tendency of an atom to pull a shared pair of electrons towards itself in a compound.

Arrange the following :

(a) Carbon, Fluorine, Beryllium (in decreasing order of atomic size).

(b) Potassium, Lithium, Sodium (in increasing order of ionization potential).

Identify the following:

(a) An element in period 1 which can be placed in both group 1 and group 17 of the Periodic Table.

(b) The element having electronic configuration 2, 8, 6.

(c) The most electronegative element of period 3.