Identify the positions of Al(z = 13) and S(z = 16) the periodic table with the help of their electronic configuration. Predict the formula of the compound formed betweent them.

In the long form of the periodic table, the valence shell electronic configuration of 5s^(2) 5p^(4) corresponds to the element present in:

Predict the position of the elements in the periodic table satisfying the configuration 3d^1 4s^2 .

Justify the placement of '0, S', Se, Te and 'Po' in the same group of the periodic table in terms of electronic configuration, oxidation state and hydride formation.

The outermost electronic configuration of A is 2s^2 2p^2 (Symbols are not real) a) Find the group number, block of this element. b) Write the chemical formula of the compound obtained by the reaction of A and chlorine. c) Write down the complete subshell electronic configuration of the element coming just below A in the same group of the periodic table?