题目内容

下列物质沸腾时只需克服色散力的是A. Cu B. NaCl C. CHCl3 D. CS2

A
B
C
D

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下列现象与氢键无关的是A. 邻羟基苯甲酸的熔沸点低于对羟基苯甲酸B. H2O的沸点高于H2SC. C2H5OH(乙醇)在水中的溶解度远远高于C2H5OC2H5(乙醚)D. HI的沸点高于HCl

A
B
C
D

Predict their molecular shape and bond angle of BF3, NF3A. both Trigonal planarB. both Trigonal pyramidalC. BF3 is Trigonal planar, NF3 is Trigonal pyramidalD. BF3 is Trigonal pyramidal, NF3 is Trigonal planar

A
B
C
D

What type of hybridization for the atom C in CCl4.A. sp B. sp2C. sp3 D. sp3 with lone pair

A
B
C
D

What type of bond between C and Cl atoms in CH3Cl ?A.σ(sp3-s)B.σ(sp3-p)C.σ(sp-s )D. π

A
B
C
D