Definition of expend in the AudioEnglish.org Dictionary. Meaning of expend. What does expend mean? Proper usage and pronunciation (in phonetic transcription) of the word expend. Information about expend in the AudioEnglish.org dictionary, synonyms and antonyms.
Confidence votes 36. Covalent bonds usually form between the electrons in the outer valence of an atom. For study island the answer is nonmetals and nonmetals. Covalent bonds usually form between the electrons in the outer valence of an atom. For study island the answer is nonmetals and nonmetals.
  A covalent bond is a chemical bond â¦ formed by the sharing of one or more electrons, especially pairs of electrons, between atoms. Covalent bonding: the electronegativity difference between bonded atoms is very small Ionic bonding: the electronegativity difference between bonded atoms is important.