ln which of the following molecular shape dz2-orbital  must not be involved in bonding ?

(1)  Pentagonal planar →sp3d3s+px+py+pz+dx2−y2+dz2+dxy(2)  Trigonal planar →sp2[s+ Any two p](3)  Linear  →sp2[s+ any one p]                     →sp2[s+ any two p]→sp3s+px+py+pz→sp3ds+px+py+pz+dz(4)  Square planar →sp3d2s+px+py+pz+dx2−y2+dz2