What are the chemical properties of the oxide of the element with atomic number -34?
| May 17, 2021 | education
The chemical element with atomic number 34 is selenium (Se), which forms acidic oxides.
SeO2 (4) – selenium dioxide, SeO3 (6) – triselenide, higher oxide, Se2O5 (5) – selenium pentoxide.
The oxidizing properties of the higher oxide are confirmed by the reaction equations:
SeO3 + H2O = H2SeO4 (selenate acid);
SeO3 + CaO = CaSeO4
SeO2 – oxidizes sulfur dioxide:
SeO2 + 2SO2 = Se + 2 SO3;
SeO3 + 2NaOH = Na2SeO4 + H2O
Selenium oxide is used in the production of semiconductors, photocells, copy equipment.
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