Tamil nadu +2 chemistry– important one mark question

                                               Atomic structure- Set 2

8.         The circumference of the circular orbit of an electron is an integral multiple of its

(a)        Frequency         (b)        momentum

(c)    Mass                      (d)        wavelength

9.         Inter molecular hydrogen bonding is present in

(a)        HF                    (b)        water    (c)        ethanol          (d) all of these

10.       Energy levels of molecular orbitals have been determined experimentally by

(a) Spectroscopic studies             (b)X-ray diffraction

(c) Crystallographic studies          (d)none of these

11.       In a molecule  N_b=8 and N_a=4. Its bond order is

(a)        3                      (b)        4          (c)        2.5                   (d)        2

12.       The hybridization involved in XeF₆  

(a)  sp³d³                       (b)sp³d²             (c)sp³d  (d)sp³

13.       The nature of hybridization in IF7 molecule is

(a)        sp³d²     (b)        sp³d⁴     (c)        sp³d³     (d)        sp²d⁴

14.       The bond order of N₂ molecule is

(a)        3          (b)        1          (c)        2          (d)        2.5