Nobles gasses will not react with metals or most nonmetals. Only a few noble gasses compounds exits, and none exist naturally. Noble gasses will only form compounds with fluorine and oxygen.
fast-flowing liquid lava
Non metals only. Can be a compound of a same element throughout like S8 or a compound of C and H2
Binary molecular.
Minerals that do not contain a metallic element.
Yes, most molecular compounds do not contain metals. (The term "nonmetal" properly applies only to elements, not compounds.)
Compounds that contain only non metal elements usually have covalent bonding and true molecules.
Generally ioic compounds contain metals and non metals. However the compound NH4Cl is ionic, and contains NH4+ and Cl- ,and all of the elements are non-metals.
Ionic compounds: NaCl, KOH, CuSO4, etc. Any compound containing a metal and a non-metal. In ionic compounds, metals have positive ions (they lose electrons to the non metal) and non-metals have negative ions (as they gain electrons from the metal) Covalent compounds: CH4, BF3, NH3, all hydrocarbons/ all compounds containing only non-metals.
Because ionic compounds contain a metal while the covalent compound contains only non-metals.
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chlorine forms ionic compounds with metals and covalent compounds with non-metals.
Metals form compounds very easily with non-metals.
oxygen and fluorine
Nobles gasses will not react with metals or most nonmetals. Only a few noble gasses compounds exits, and none exist naturally. Noble gasses will only form compounds with fluorine and oxygen.
Metals and nonmetals form ionic compounds.
Calcium cannot form a covalent compound because it is a metal, covalent compounds are formed only from non-metals.