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.
Covalent bonding . One rule for predicting when an ionic bond will take place is when the difference between electronegativities is 1.7 or greater. In other cases atoms bond by sharing electrons on the valence shells. The force that holds two atoms together in this case is called a covalent bond. A covalent bond can be described as the mutual attraction that positive nuclei have for the shared, negatively charged bonding electrons.