False. The correct formula for sulfur hexachloride is actually SCl6.
Explanation: Sulfur hexachloride consists of one sulfur (S) atom bonded to six chlorine (Cl) atoms. The prefix ‘hex’ in its name indicates the presence of six chlorine atoms. If it were to be SCl7, it would imply that there are seven chlorine atoms bonded to a single sulfur atom, which is not the case. Therefore, the statement is incorrect.