group 1 elements

The atomic size of elements of group 2 compared to group 1 element are

Group 1 and group 2 elements are placed at the ______ of the long form of the modern periodic table .

(a) What is the fundamental difference in the electronic configurations between the group 1 and group 2 elements? (b) On the basis configuration, how will you identify: (i) chemically similar elements? (ii) the first element of a period?

Group 13 elements show +1 and +3 oxidation states. Relative statibility of +3 oxidation may be given as

Assertion : Acidity of hydrides of group 16 elements increases down the group. Reason : Electronegativity of these elements increases down the group.

Group 17 elements are known as

Group 13 elements exhibit