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.
According to valence bond theory, to form a covalent bond, a valence orbital bearing one electron in one atom overlaps with a valence orbital bearing one electron in another atom. Consider the electron configurations of carbon and hydrogen. The valence shell in carbon is shell two, and it has four electrons.