Passage - I : A yellow powder 'x' is burnt in a steam of Fluorine to obtain a colourlessgas 'y' which is thermally stable and chemically inert its molecule has octahedral geometry another colourless gas 'z' with same constituent atoms as that of 'y' is obtained when sulphur dichloride is heated with sodium fluoride. It's molecule has trigonal bi-pyramidal geometry The colourless gas 'z' is

Passage - I : A yellow powder 'x' is burnt in a steam of Fluorine to

1.	Passage - I : A yellow powder 'x' is burnt in a steam of Fluorine to obtain a colourlessgas 'y' which is thermally stable and chemically inert its molecule has octahedral geometry another colourless gas 'z' with same constituent atoms as that of 'y' is obtained when sulphur dichloride is heated with sodium fluoride. It's molecule has trigonal bi-pyramidal geometry The colourless gas 'z' is
Answer» `SF_(4)` `SF_(6)` `S_(4)F_(4)` NAF SOLUTION :`Z=SF_(4), 4SCl_(2)+4NaF to 2SF_(4)+4NaCl`