Not every AB5 molecule has a square pyramid structure. While some AB5 molecules, such as phosphorus pentachloride (PCl5), do have a square pyramid structure, others may have different structures depending on the atom involved and its geometry. For example, SF5Cl has a trigonal bipyramidal structure, not a square pyramid. The actual structure depends on the specific molecular geometry and the arrangement of atoms and lone pairs around the central atom.
So, the correct option is (C): Every AB5 molecule does in fact have square pyramid structure
List I | List II | ||
(P) | XeF2 | (1) | Trigonal bipyramidal and two lone pair of electrons |
(Q) | XeF4 | (2) | Tetrahedral and one lone pair of electrons |
(R) | XeO3 | (3) | Octahedral and two lone pair of electrons |
(S) | XeO3F2 | (4) | Trigonal bipyramidal and no lone pair of electrons |
(5) | Trigonal bipyramidal and three lone pair of electrons |
List I (Spectral Lines of Hydrogen for transitions from) | List II (Wavelength (nm)) | ||
A. | n2 = 3 to n1 = 2 | I. | 410.2 |
B. | n2 = 4 to n1 = 2 | II. | 434.1 |
C. | n2 = 5 to n1 = 2 | III. | 656.3 |
D. | n2 = 6 to n1 = 2 | IV. | 486.1 |