Question
What characteristics must atoms $A$ and $X$ have if they are able to form a covalent bond $A-X$ with each other? A polar covalent bond with each other?
Step 1
For atoms A and X to form a covalent bond, they must both have unpaired electrons in their outermost energy levels (valence electrons). This is because covalent bonds involve the sharing of electrons between atoms. Show more…
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