Give the formulae of the compounds formed from the following sets of elements:
(a) calcium and fluorine (b) hydrogen ans sulphur (c) nitrogen and hydrogen (d) carbon and chlorine
(e) sodium and oxygen (f) carbon and oxygen
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Solution
(a) CaF2
(b) H2S
(c) NaH
(d) CCl4
(e) Na2O
(f) CO2