Question

Which of the following do not exist ?
(A) SH6
(B) HFO4
(C) Fel3
(D) HCIO3

Answer 1

Answer:

option A

Explanation:

SF₆ exists but SH₆ dosent.

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Answer 2

Answer:

In this question,

$\mathbf{SH_{6}}$ does not exist because when bonding with 6 Hydrogen's, the oxidation number of S would be -6, which is impossible for the Sulfur atom.

However, $\mathbf{SF_{6}}$ exists because, in this case, Sulfur ‘loses’ all of its 6 valence electrons to the 6 Fluorine atoms that it connects to, rendering S an oxidation number of +6 which is a valid oxidation state of S