8. Chemical formula

Drag and drop the correct answer:
Answer variants:
\(CCl_4\)
\(CaF_2\)
\(H_2S\)
\(Na_2O\)
\(NH_3\)
\(CO\), \(CO_2\)
\(CaF\)
Give the formulae of the compounds formed from the following sets of elements:
 
i. Hydrogen and sulphur :

ii. Carbon and oxygen :
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