Question

sf6 is known but scl6 is why not..?​

Answer 1

Answer:

There is no more outer shell in cl therefore.

Answer 2

Heya Mate........

Fluorine atom is smaller in size so, six F- ions can surround a sulphur atom. The case is not so with chlorine atom due to its large size. So, SF6 is known but SCI6 is not known due to interionic repulsion between larger ions.

Hope this will help you......