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lone pair

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Lone Pair


In chemistry, a pair of electrons in the outermost shell of an atom that are not used in bonding. In certain circumstances, they will allow the atom to bond with atoms, ions, or molecules (such as boron trifluoride, BF3) that are deficient in electrons, forming coordinate covalent (dative) bonds in which they provide both of the bonding electrons.

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Eritrea Flag
Eritrea Flag Green, red, and blue were the colours of the Eritrean People's Liberation Front (EPLF) flag which bore a yellow star at the hoist. Effective date: late 1995. >>

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