Chemistry

Lassaigne’s Test, also known as the sodium fusion test, is a qualitative analytical method used to detect the presence of nitrogen, sulfur, and halogens (chlorine, bromine, iodine) in an organic compound. In other words, Lassaigne’s Test is a chemical procedure where an organic compound is fused with metallic sodium. This fusion process converts the covalently … Read more

What is the VSEPR Theory? VSEPR Theory, which stands for Valence Shell Electron Pair Repulsion Theory, is a model used in chemistry to predict the shapes of individual molecules based on the number of electron pairs surrounding their central atoms. VSEPR Theory posits that the geometric arrangement of a molecule or a polyatomic ion’s electron … Read more

Alkali metals are defined as a group of elements in the periodic table that share similar properties, characterized by their highly reactive nature and tendency to lose their outermost electron to form a +1 cation. In other words, Alkali metals are elements that belong to Group 1(a) of the periodic table. Their name derives from the fact that … Read more

Elements in the periodic table are arranged by increasing atomic weight, with each element provided with a chemical symbol used in place of the element’s full name. The periodic table is further arranged into rows and columns known as periods and groups. Periods and groups are characterized by similarities in physical and chemical properties. Alkaline … Read more

Hydroxamic acids are a class of organic compounds having a general formula R−C−N−R’ bearing the functional group −C−N−, where R and R’ are typically organyl groups or hydrogen. They are amides wherein the nitrogen atom has a hydroxyl substituent. They are often used as metal chelators. They are more acidic than amides due to the … Read more

Barium hydroxide, also known as baryta, is a chemical compound with the formula Ba(OH)2. It has a unique structure that influences its properties and behavior. In its solid state, barium hydroxide crystallizes as an octahydrate, Ba(OH)2·8H2O, which can be converted to the monohydrate by heating in air. The octahydrate form is a white crystalline solid. … Read more

Barium nitrate (Ba(NO₃)₂) is an inorganic compound composed of barium, nitrogen, and oxygen. It is a white crystalline solid that is soluble in water and has a density of 2.65 g/cm³. Barium nitrate burns with a green flame. It is used in the production of fireworks, flares, and other pyrotechnic devices, as well as in … Read more

Barium carbonate is the inorganic compound with the formula BaCO3. It is a salt composed of barium cations (Ba²⁺) and carbonate anions (CO₃²⁻). Like most alkaline earth metal carbonates, it is a white salt that is poorly soluble in water. It occurs as the mineral known as witherite. It is commonly used in the manufacture of … Read more

Barium chloride (BaCl2) is a chemical compound composed of one barium ion (Ba2+) and two chloride ions (Cl-) in a 1:2 ratio. In other words, it is an inorganic compound that is one of the most common water-soluble salts of barium. It is a white powder that is highly toxic and imparts a yellow-green coloration … Read more