Write the formulas of substances and determine the oxidation states of atoms: a) nitrogen oxide (V),

Write the formulas of substances and determine the oxidation states of atoms: a) nitrogen oxide (V), b) calcium nitride, c) barium fluoride, d) silicon chloride (IV).

a) N2O5
oxidation state of nitrogen: +4 (not +5, because an exception !!)
oxygen oxidation state: -2

b) Ca (NO2) 2
calcium oxidation state: +2
oxidation state of nitrogen: +4
oxygen oxidation state: -2

c) BaF2
oxidation state of barium: +2
fluorine oxidation state: -1

d) SiCl4
oxidation state of silicon: +4
chorus oxidation state: -1



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