Incorrect order of radius is :-A P¯3 > S–2 > K+ B Ni > Cu > Zn C H+ < H < H– D Li < Na < K

The correct order of atomic radii is determined by the number of protons in the nucleus (atomic number) and the number of electron shells.

A) P¯3 > S–2 > K+ This order is incorrect. The correct order should be K+ > S-2 > P-3. This is because K+ has lost an electron, reducing electron-electron repulsion and allowing the remaining electrons to be pulled closer to the nucleus. S-2 and P-3 have gained electrons, increasing electron-electron repulsion and causing the atomic radius to expand. However, P-3 has more protons than S-2, pulling the extra electrons closer and making its radius smaller than S-2.

B) Ni > Cu > Zn This order is incorrect. The correct order should be Cu > Zn > Ni. This is because as you move across a period from left to right, the number of protons increases, pulling the electrons closer to the nucleus and decreasing the atomic radius.

C) H+ < H < H– This order is correct. H- has gained an electron, increasing electron-electron repulsion and expanding the atomic radius. H+ has lost an electron, reducing electron-electron repulsion and allowing the remaining electron to be pulled closer to the nucleus, making its radius smaller than H.

D) Li < Na < K This order is correct. As you move down a group, the number of electron shells increases, increasing the atomic radius.