MCQ
$S—O$ bond length is maximum in
- A$SO_2$
- B$SO_3$
- C$SO_4^{-2}$
- ✓$SO_3^{-2}$

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| Column $I$ | Column $II$ |
| $(A)$ Orbital angular momentum of the electron in a hydrogen-like atomic orbital | $(p)$ Principal quantum number |
| $(B)$ A hydrogen-like one-electron wave function obeying Pauli principle | $(q)$ Azimuthal quantum number |
| $(C)$ Shape, size and orientation of hydrogen-like atomic orbitals | $(r)$ Magnetic quantum number |
| $(D)$ Probability density of electron at the nucleus in hydrogen-like atom | $(s)$ Electron spin quantum number |

${P_4} + 6Cl_2\xrightarrow{\Delta }PC{l_3}$