Name or state the following with reference to the elements of the modern periodic table.
1. The period and group to which the element ‘X’ with electronic configuration 2, 8, 8, 2 belongs.
2. The more electronegative element from the elements Ar, S, Cl of period-3.
3. The element with the largest atomic size from the elements of period-1, 2 and 3.
4. The element with the highest ionisation potential from the elements of period 1, 2 and 3
5. The element from the elements Li, Na, K which has maximum metallic character.
