There are nine elements A to I. these are belongs to p-block element other than halogen. If atomic number of B is average of atomic number of A and C and atomic number of E is average of atomic number of D and F and atomic number of H is average of atomic number of G and I. atomic numbers of B, E and H are 7,15 and 83 respectively and atomic numbers of C, I and F are greater than A, G and D respectively. Q. The incorrect order is:

There are nine elements A to I. these are belongs to p-block element

1.	There are nine elements A to I. these are belongs to p-block element other than halogen. If atomic number of B is average of atomic number of A and C and atomic number of E is average of atomic number of D and F and atomic number of H is average of atomic number of G and I. atomic numbers of B, E and H are 7,15 and 83 respectively and atomic numbers of C, I and F are greater than A, G and D respectively. Q. The incorrect order is:
Answer» `F GT E`: Second IONISATION energy `B gt C `: `Z_(ef f)` on valence shell `I gt H`: FIRST ionisation energy `C gt F gt E`, Electronegativity Solution :The correct order of `IE_(1)(H_((Bi)) gt I_((Po))`