The electronegative of the following elements increase in the order.

$(a)\;Si,P,C,N \\(b)\;N,Si,C,P \\ (c)\;P,Si,N,C \\ (d)\;C,N,Si,P$

Solution :
Electro negativity increases from left to right in period and increases from bottom to top in group
Hence a is the correct answer.
answered Mar 6, 2014 by
edited Oct 6, 2017