Which of the following is not an element of group 13?
Ga
B
Al
Pb
The outermost electronic configuration of Pb is ns2np2, hence it belongs to group 14 and not group 13.
Question 17
Elements of which of the following group (s) of periodic table do not form hydrides?
(a) Groups 7,8,9 (b) Group 13
(c) Groups 15,16,17 (d) Group 14
Which of the following group 13 elements oxide is acidic in nature?
Based on the group valency of elements state the formula for the following giving justification for each:
(i) Oxides of 1st group elements.
(ii) Halides of the elements of group 13.
(iii) Compounds formed when an element of group 2 combines with an element of group 16.