In binary hydrogen compounds, determine the valence of the chemical elements O2, CaCO3, HNO3, …
| June 29, 2021 | education
The valence of oxygen in the oxygen molecule O2 is two; the valence of hydrogen in HNO3 is 1, nitrogen is 5, and oxygen is 2.
The valence of calcium in CaCO3 is two, carbon – 4, oxygen – 2.
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