摘要:21.有下列各组微粒或物质 CH3 A.O2和O3 B.C和C C.CH3CH2CH2CH3和CH3CH2CHCH3 H Cl CH3 D.Cl-C-Cl和Cl-C-H E.CH3CH2CH2CH3和CH3CHCH3 H H (1) 组两种微粒互为同位素, (2) 组两种物质互为同素异形体, (3) 组两种物质属于同系物, (4) 组两物质互为同分异构体, (5) 组两物质是同一物质.
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