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Graphene (/ ˈ ɡ r æ f iː n /) [1] is a carbon allotrope consisting of a single layer of atoms arranged in a honeycomb planar nanostructure. [2] [3] The name "graphene" is derived from "graphite" and the suffix -ene, indicating the presence of double bonds within the carbon structure.
A separate missile attack on an industrial facility in Ternopil forced officials to issue health warnings due to increased chlorine levels in the air. [115] The Czech Defense Ministry announced that it would use revenue from Russian assets frozen by the EU to purchase "several hundred thousand pieces of large-caliber ammunition" for Ukraine. [116]