CHEM 121 : Test 2
15 Mar 2019
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Instead of worrying about counting numbers individual we count them by mass: by mass we figure out how many things we have in a single, the nucleus is this marriage of positive charge glued together by the neutrons. Only a small number of atoms are happy about how the electrons are distributed so the other elements try to take and receive electrons to be happy: oxidation number. If something needs electrons it must get them from other materials. Ionic compounds are formed when the combining atoms have large differences in electronegativity, or desire to gain electrons: when you have ionic compounds form they are separated by big space in the table. The elements from the left become cations and the right gain and become anions. Ionic compounds: are formed from one giver of electrons and one taker of electrons; they are solid because an individual unit sticks together.
