WebElectronegativity is the tendency of an atom to attract a bonding pair of electrons. Explain the trend in oxidising ability of the halogens! The halogens become less oxidising down the group because: 1. The atoms get larger. 2. The outer shell is further from the nucleus, so electrons are less strongly attracted to it.

Hydrogen halides as acids - chemguide

WebQ. THE HALOGENS Q3 All the halogens form binary hydrogen com‑ pounds with the general formula HX(g), where X is one of the halogens. Hydrogen fluoride, HF(g), is a highly irritating, corrosive, colorless gas. It can be prepared by the reaction described by the equation CaF 2 (s) + H 2 SO 4 (aq) → CaSO 4 (s) + 2 HF(g) WebThe halogens react with hydrogen to produce compounds called hydrogen halides. For example, chlorine reacts with hydrogen: Hydrogen + chlorine → hydrogen chloride H2(g) + … share shot download

Halogens - Concept - Chemistry Video by Brightstorm

http://hyperphysics.phy-astr.gsu.edu/hbase/pertab/halog.html Webcombustion products from a 1g halogen-free flux sample have been found to drop the pH of analytical-grade water absorption solution to below pH 1. This is undesirable because in an environment of high temperature, low-pH, and high partial-pressure of … WebHalogens. Other chemicals commonly used for disinfection are the halogens iodine, ... It is thought to work by decreasing intracellular pH, interfering with mechanisms such as oxidative phosphorylation and the uptake of molecules such as amino acids into cells. Foods preserved with benzoic acid or sodium benzoate include fruit juices, jams, ice ... share shot open