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No. Both are different. Sodium selenide is an ionic compound by the formula Na2Se. Sodium selenite is Na2SeO3, a selenite is the analog of sulfite. Selenium is a nonmetal with the symbol, Se.
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Chemical process to convert selenate to selenium?
Reduction
Is selenium found in a compound or in pure elemental?
Selenium occurs naturally in a number of inorganic forms, including selenide, selenate, and selenite. In soils, selenium most often occurs in soluble forms such as selenate (analogous to sulfate), which are leached into rivers very easily by runoff.Selenium has a biological role, and it is found in organic compounds such as dimethyl selenide, selenomethionine, selenocysteine, and methylselenocysteine. In these compounds, selenium plays a role analogous to that of sulfur.Selenium is most commonly produced from selenide in many sulfide ores, such as those of copper, silver, or lead. It is obtained as a byproduct of the processing of these ores, from the anode mud of copper refineries and the mud from the lead chambers of sulfuric acid plants. These muds can be processed by a number of means to obtain free selenium.Natural sources of selenium include certain selenium-rich soils, and selenium that has been bioconcentrated by certain plants. Anthropogenic sources of selenium include coal burning and the mining and smelting of sulfide ores. (Source wikipedia)
Is selenium-dioxide is more acidic then sulfur-dioxide?
Selenium is considered a heavy metal (although ironically a non-metal) and when combined with oxygen has relatively weak intramolecular forces that are easily overcome by the strong polarity of water forcing it to ionise. Sulfur ionises less readily
What is the chemical symbol for selenate?
Formula: SeO42-
Compare the number of valence electrons on oxygen atom has with number of valence electrons a selenium atom has Are oxygen and selenium in the same period or group?
They both have 6 valence electrons. Oxygen and Selenium are in the same group.
Chemical process to convert selenate to selenium?
Reduction
What makes up selenate?
1 atom of Selenium and 4 of Oxygen
What is the name of the compound NiSe?
Nickel(II) Selenate
What are five compounds of selenium?
Selenium dioxide: SeO2 Potassium selenate: K2SeO4 Selenium tetrabromide: SeBr4 Selenous acid: H2SeO3 Selenium disulphide: SeS2 Selenium hexafluoride: SeF6 Potassium selenocyanate: KSeCN
What is the name for TeO42-?
This is the ortho-tellurate ion. TeO42-
Is selenium found in a compound or in pure elemental?
Selenium occurs naturally in a number of inorganic forms, including selenide, selenate, and selenite. In soils, selenium most often occurs in soluble forms such as selenate (analogous to sulfate), which are leached into rivers very easily by runoff.Selenium has a biological role, and it is found in organic compounds such as dimethyl selenide, selenomethionine, selenocysteine, and methylselenocysteine. In these compounds, selenium plays a role analogous to that of sulfur.Selenium is most commonly produced from selenide in many sulfide ores, such as those of copper, silver, or lead. It is obtained as a byproduct of the processing of these ores, from the anode mud of copper refineries and the mud from the lead chambers of sulfuric acid plants. These muds can be processed by a number of means to obtain free selenium.Natural sources of selenium include certain selenium-rich soils, and selenium that has been bioconcentrated by certain plants. Anthropogenic sources of selenium include coal burning and the mining and smelting of sulfide ores. (Source wikipedia)
Is selenate organic?
No
What is the Method of analysis of sodium selenate?
max absorption wavelength of sodium selenate solution and colour
Is selenium-dioxide is more acidic then sulfur-dioxide?
Selenium is considered a heavy metal (although ironically a non-metal) and when combined with oxygen has relatively weak intramolecular forces that are easily overcome by the strong polarity of water forcing it to ionise. Sulfur ionises less readily
What is the chemical reaction that how is how the bacteria make Se0 using hydrogen sulfide H2S and selenate?
Case History: Kesterson National Wildlife Refuge Background Kesterson National Wildlife Refuge, California. In the San Joaquin Valley, irrigation water wasn't draining properly, and crops were dying in the water-logged soil. In 1981, a drainage system was built that would channel irrigation runoff into shallow ponds called Kesterson Reservoir. In addition to receiving field runoff, the new reservoir was to be a waterfowl habitat. In 1983, an unusually large number of dead birds was found, indicating that something was wrong with the water. Selenium from the soil (in the form of selenate, SeO42-) was dissolving in the irrigation water and being carried to Kesterson Reservoir, where it stayed. The concentration of selenium in Kesterson rose to 29 times higher than that which was considered safe. For now, to prevent the killing of more birds, Kesterson Reservoir is being filled with soil. But the selenium remains. A number of bacteria, including Bacillus, Acinetobacter, and Pseudomonas, can convert selenate (SeO42-) to nontoxic elemental selenium. The bacteria do this for their own survival-to prevent the accumulation of toxic levels in their cells. QuestionWhat is the chemical reaction that shows how the bacteria make Se0, using hydrogen sulfide (H2S) and selenate?
Formula of hydrogen selenate?
H2SeO4
Is selenate organic or inorganic?
Inorganic
