Question

which shows incomplete octet between SF6 and NO?​

Answer 1

Answer:

The octet rule can be 'expanded' by some elements by utilizing the d- orbitals found in the third principal energy level and beyond. ... Phosphorus pentachloride (PCl5) and sulfur hexafluoride (SF6) are examples of molecules that deviate from the octet rule by having more than 8 electrons around the central atom.

Answer 2

Explanation:

In PF

5

,SF

6

and H

2

SO

4

, the central atom has more than eight valence electrons hence they exhibit expanded octet. This is possible due to availability of 3d orbitals.

Elements in and beyond the third period of the periodic table do not follow octet rule thus it applies mainly to the second period elements of the periodic table.