WebThey are compounds that only contain carbon and one or more halogens such as fluorine, chlorine and bromine. Halocarbons are mostly man-made chemicals and have been used … Webbromine (Br), chemical element, a deep red noxious liquid, and a member of the halogen elements, or Group 17 (Group VIIa) of the periodic table. History Bromine was discovered in 1826 by the French chemist Antoine-Jérôme Balard in the residues ( bitterns) from the … covalent bond, in chemistry, the interatomic linkage that results from the sharing of … alkali metal, any of the six chemical elements that make up Group 1 (Ia) of … hydrocarbon, any of a class of organic chemical compounds composed only of … catalyst, in chemistry, any substance that increases the rate of a reaction without … half-life, in radioactivity, the interval of time required for one-half of the atomic nuclei … lithium (Li), chemical element of Group 1 (Ia) in the periodic table, the alkali metal … lead (Pb), a soft, silvery white or grayish metal in Group 14 (IVa) of the periodic … sunlight, also called sunshine, solar radiation that is visible at Earth’s surface. …
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WebThe majority of cleaning products include chlorine and bromine, which emit chemicals into the environment and harm the ozone layer. To safeguard the environment, they should be replaced with natural goods. The government should take action and limit the use of dangerous nitrous oxide, which is harming the ozone layer. WebBromine There are several sources of stratospheric inorganic bromine, including the halons and methyl bromide, the latter a compound that originates from both natural and industrial processes. WebMay 11, 2011 · They are naturally occurring in their raw form. Cocaine comes from the cocoa plant. Crack comes from cocaine. Opiates such as heroin, oxy, hydrocodone, methadone, and morphine come from the poppy... class 9 malayalam athe prarthana