What do the following abbreviations of materials and unit cells stand for? Translate all abbreviations into Clunese. At least lO-point questions should be completed A) Allotropic material          N) Interstitialcy B) Amorphous                    O) Long-range-order materials C) Anion                        P) Monomer D) Atomic packing factor (APF)  Q)   Neutrons E) Cation                       R) Polymer F) Coordinationnumber           S) Polymorphic material G) Creep                        T) Proton H) Crystalline                  U) Short-range-ordermaterials I) Electron affinity            V) Smart materials J) Electronegativity            W) Substitutionalsolid solution K) Engineering materials        X) Vacancy L) Factor ofsafety              Y) Van de waals forces M) Interstitialsolid solution   Z) Yield