please answer

Question

how many of following have greater z-effective than silicon atom

 

Na,Mg,Al,P,Cl,S,N,O,C,F

Answer 1

Hello Prakhar

 

For effective nuclear charge (Z_eff), the trend from the periodic table is that Z_eff increases from bottom to top within a group AND from left to right within a period.

 

First locate where Silicon (Si) is in the periodic table → Group 4.  Now look for elements listed in your question that are above and/or to the right of silicon.

 

From the elements listed in your question, P, Cl, S, N, O, C and F will have a greater Z_eff than Si.