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The melting point of BeO is 2,507°C while the melting point of NaCl is 801°C. Explanations for this difference include which of the following? I. Be2+ is more positively charged than Na+. II. O2− is more negatively charged than Cl−. III. The Cl− ion is larger than the O2− ion.

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The melting point of BeO is 2,507°C while the melting point of NaCl is 801°C. Explanations for this difference include which of the following? I. Be2+ is more positively charged than Na+. II. O2− is more negatively charged than Cl−. III. The Cl− ion is larger than the O2− ion.






 
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