Completar Frases Formation of covalent bondsVersión en línea Fill the blancks por muzan amir mohammed elhaj 1 A covalent bond forms when two or more atoms their valence electrons . An - is used to represent the valence electrons of an atom . A is used to show the arrangement of valence electrons in a molecule . The shared valence electrons are called . The unbonded valence electrons are called .
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