Make up the formulas of hydrogen compounds of the following elements: S (II), P (III), F (I), C (IV).

We compose the formulas of hydrogen compounds of the following elements: S (II), P (III), F (I), C (IV).
We get the following.
We make a formula with sulfur.
H2S – this compound is called hydrogen sulfide.
We make a formula with phosphorus.
PH3 – this compound is called phosphine.
We make a formula with fluorine.
HF – this compound is called hydrogen fluoride.
We make a formula with carbon.
CH4 – this compound is called methane.



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