Question

(2004·厦门)已知MgO、KBr、NaF都为NaCl型晶体，试推断它们的熔点由高到低的顺序为

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A．MgO＞KBr＞NaF＞NaCl

B．KBr＞MgO＞NaF＞NaCl

C．MgO＞NaF＞NaCl＞KBr

D．NaF＞NaCl＞KBr＞MgO

Answer 1

答案：C
解析：