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-10323(411?10)?6.023?10 7162 (1) (1/4,1/4,1/4);(3/4,3/4,1/4);(3/4,1/4,3/4);(1/4,3/4,3/4);(0,0,0); (1/2,1/2,0);(1/2,0,1/2);(0,1/2,1/2). (2) lC-C=
143a=
143¡Á356.6 pm¡Ö154.4pm
3a)3)/a3=34.1% £¨Ì¼Ô×Ӱ뾶Ϊ¼ü³¤µÄ¶þ·ÖÖ®Ò»£©
(3) ?=(8¡Á
43341?r)/a=(8¡Á?(3388?12/NA8?12/(6,022?1023) (4) d==g¡¤cm-3=3.51g¡¤cm-3
3-103a(356.6?10) (5) Á¢·½ÃæÐÄ
7168 (1) AB3C (2) A (0,0,0) B (1/2,1/2,0) (0,1/2,1/2) (1/2,0,1/2) C (1/2,1/2,1/2)
7172 (1) 0.917 g¡¤cm-3; (2) 276.4 pm; 7178(D) 7190¸ù¾Ýd?ZMa3NA
µÃ
da3NA8.906g?cm?3?(352.4?10?10)3cm3?6.023?1023mol?1Z???4
?1M58.70g?mol