Question

31. Two elements P'and 'Q'belong to the same period
of the modern periodic table and are in Group 1
and Group 2 respectively. Compare their following
characteristics in tabular form:
(i). The number of electrons in their atoms
(ii) The sizes of their atoms
(iii) Their metallic characters
(iv) Their tendencies to lose electrons
(V) The formula of their oxides
(vi) The formula of their chlorides​

Answer 1

As elements P and Q belong to the same period of the modern periodic table and are in group 1 and group 2, they belong to alkali metals and alkaline earth metals, respectively.