Group 13 Elements

The increasing order of atomic radii of the following Group 13 element is

Which of the following group 13 element ocurre in nature as oxide ?

Write the name of group 13 element which is used to measure high temperature.

Name the group 13 element which forms most stable compounds in +1 oxidation state.

Outermost electronic configuration of a group 13 element, E, is 4s^(2) , 4p^(1) . The electronic configuration of an element of p- block period – five placed diagonally to element , E is: