On the basis of ionic charge and ionic radii given in Table 1, predict crystal structures for the following materials: a. CaO (b) MnS (c) KBr (d) CsBr b. Justify your selections. Table 1: Ionic Radii for Several Cations and Anions Ionic Radius (nm) Ionic Radius (nm) Cation Anion AP: 0.053 Br 0.196 Ba?+ 0.136 a 0.181 Ca+ 0.100 F 0.133 Cs* 0.170 0.220 Fe2+ Fe 0.077 O2- 0.140 0.069 0.184 K* 0.138 Mg. Mn2 0.072 0.067 Na* 0.102 0.069 Sit 0.040 0.061

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3. On the basis of ionic charge and ionic radii given in Table 1, predict crystal structures for the
following materials: (
a. CaO (b) MnS (c) KBr (d) CsBr
b. Justify your selections.
Table 1: Ionic Radii for Several Cations and Anions
Ionic
Radius (am)
Ionic
Cation
Radius (nm)
Anion
0.053
Br
0.196
Ba?+
Ca?+
0.136
0.181
0.100
F
0.133
Cs*
0.170
0.220
Fe2+
0.077
0.140
Fe
0.069
0.184
K*
0.138
Mg
Mn2*
0.072
0.067
Na*
0.102
Ni+
0.069
Sit+
0.040
0.061
Transcribed Image Text:3. On the basis of ionic charge and ionic radii given in Table 1, predict crystal structures for the following materials: ( a. CaO (b) MnS (c) KBr (d) CsBr b. Justify your selections. Table 1: Ionic Radii for Several Cations and Anions Ionic Radius (am) Ionic Cation Radius (nm) Anion 0.053 Br 0.196 Ba?+ Ca?+ 0.136 0.181 0.100 F 0.133 Cs* 0.170 0.220 Fe2+ 0.077 0.140 Fe 0.069 0.184 K* 0.138 Mg Mn2* 0.072 0.067 Na* 0.102 Ni+ 0.069 Sit+ 0.040 0.061
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