What type of compound is hydrogen selenide?
Hydrogen selenide is an inorganic compound with the formula H2Se. This hydrogen chalcogenide is the simplest and most commonly encountered hydride of selenium. H2Se is a colorless, flammable gas under standard conditions. It is the most toxic selenium compound with an exposure limit of 0.05 ppm over an 8-hour period.
Is hydrogen selenide an acid?
Hydrogen selenide (H2Se) is a fairly strong acid with a pKa of 3.8 in aqueous systems. It is a colorless gas with an unpleasant odor.
Is selenide soluble?
IRON SELENIDE Chemical Properties,Uses,Production Almost insoluble in water; soluble in hydrochloric acid, evolving selenium hydride.
What element is Se 2 with?
Selenium
Selenide is an elemental selenium….4.3Related Element.
| Element Name | Selenium |
|---|---|
| Element Symbol | Se |
| Atomic Number | 34 |
Is H₂se ionic or covalent?
H2Se H 2 S e consists of two H-Se covalent bonds. The electronegativity of the Se and H atom are 2.4 and 2.1, respectively.
What is HSeO3 chemistry?
HSeO3(-) hydrogenselenite(1-) hydroxidodioxidoselenate(1-) CHEBI:29924 [DBID]
What is selenide in selenium?
Selenide is a framework that is powered by Selenium WebDriver. Selenide was created as a tool for writing automated tests.
What is metal selenides and tellurides?
A selenide is a chemical compound containing a selenium anion with oxidation number of −2 (Se2−), much as sulfur does in a sulfide. Owing to the greater reducing power of selenide, metal selenides are more easily decomposed to the elements than are sulfides (tellurides are even more labile).
Is Si a metal?
Silicon is neither metal nor non-metal; it’s a metalloid, an element that falls somewhere between the two. Silicon is a semiconductor, meaning that it does conduct electricity.
Is baf2 an ionic solid?
Barium fluoride is an ionic compound because it is made up of the barium cation (has a +2 charge) and…
What are the similarities between selenides and sulfides?
The chemistry of the selenides and sulfides is similar. Similar to sulfide, in aqueous solution, the selenide ion, Se 2−, is prevalent only in very basic conditions. In neutral conditions, hydrogen selenide ion, HSe −, is most common. In acid conditions, hydrogen selenide, H 2Se, is formed. Some selenides are reactive to oxidation by air.
What is the alkylation of selenides?
Alkylation of selenides gives trivalent selenium compounds, selenonium salts, which are more easily prepared than the corresponding sulfonium salts (Equation (34) ). Kinetic studies show that selenides are 2.6 to 5.8 times more reactive than sulfides and the polarity of the solvent plays an important role in the alkylation < 83JCS (P2)1605 >.
Is selenide ionic or covalent or ionic?
Similar to sulfide, in aqueous solution, the selenide ion, Se 2−, is prevalent only in very basic conditions. In neutral conditions, hydrogen selenide ion, HSe −, is most common. In acid conditions, hydrogen selenide, H 2Se, is formed.
What is the most common selenide ion in neutral conditions?
Similar to sulfide, in aqueous solution, the selenide ion, Se2−, is prevalent only in very basic conditions. In neutral conditions, hydrogen selenide ion, HSe−, is most common.