7. Exemplar - Chemical formula

Drag and match the correct answer:
Answer variants:
\(CaF_2\)
\(H_2S\)
\(CCl_4\)
\(NH_3\)
\(Na_2O\)
\(CO\), \(CO_2\)
\(NH_4\)
\(Al_2O_3\)
Give the formulae of the compounds formed from the following sets of elements:
 
i. Carbon and chlorine :

ii. Aluminium and oxygen :
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