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Unformatted text preview: magnesium When an alkali metal reacts with a halogen: an electron transfers from the alkali metal to the halogen The cation among the following is: a sodium atom The valence shell of an atom is: the outermost shell containing electrons The chemical symbol for potassium is: K The chemical symbol for sodium is: Na An element that is a gas: Argon The element that does not belong in the following series is: Lithium A covalent bond forms as: two electrons are shared between two atoms A dipole results from: the separation of positive and negative charges in a molecule When magnesium burns in air, the product is: Mg 3 O 2 When magnesium reacts with bromine, the molecular formula of the product is: MgBr 2...
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