A ceramic is a: compound between a metallic and non-metallic element in which th

Question

A ceramic is a: compound between a metallic and non-metallic element in which there are only permanent dipoles compound between two metallic elements in which there are covalent bonds compound between a metallic and an electropositive element in which the bonding is ionic compound between two electronegative elements in which there are ionic bonds compound between a metallic and a non-metallic element in which the bonding is at least partially ionic The atomic packing factor in Ca is less than in Mo. True False Which has the highest coefficient of thermal expansion? AI_2O_3 Ti polyethylene Steel

Explanation / Answer

11. A ceramic is a,

a. compound between a metalic and non-metalic element in which there are only permanent dipoles.

Ceramics are inorganic nonmetallic compounds consisting or metal, non-metals or metalloid atoms helf together by ionic or covalent bonds.

12. The atomic packong fraction of Ca is less than Mo,

False

13. The highest coeficient of thermal expansion would be seen for,

polyethylene

Lower melting point means high thermal expansion and vice versa.

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