下列化合物中熔点高低顺序正确的是:
A: KCl>KI>CBr4>CCl4
B: KI>KBr>CBr4>CCl4
C: CBr4>CCl4>KCl>KBr
D: KBr>KI>CCl4>CBr4
A: KCl>KI>CBr4>CCl4
B: KI>KBr>CBr4>CCl4
C: CBr4>CCl4>KCl>KBr
D: KBr>KI>CCl4>CBr4
举一反三
- 下列碳正离子的稳定性顺序是:( ) A: (1) > (2) > (3) > (4) B: (2) > (4) > (3) > (1) C: (1) > (3) > (2) > (4) D: (2) > (4) > (1) > (3)
- 下列物质(1) CaO;(2) MgO;(3) NH3;(4) PH3熔点由高到低的顺序为:( ) A: (1) > (2) > (3) > (4) B: (1) > (2 ) > (4 ) > (3) C: (2) > (1) > (4) > (3) D: (2 ) > (1) > (3 ) > (4 )
- 将下列化合物按极性大小排列顺序:(1)CH4 (2)CH3F (3)CH3Cl (4 )CH3Br (5)CH3I A: (1)>(2)>(3)>(4)>(5) B: (5)>(4)>(3)>(2)>(1) C: (2)>(3)>(4)>(5)>(1) D: (3)>(4)>(5)>(1)>(2)
- 以下选项中,输出结果为True的是( )。 A: >>> 5 is 4 B: >>> 5 == 4 C: >>> 5 is not 4 D: >>> 3<=0
- 化合物(1)正丙基氯、(2)乙醚、(3)正丁醇、(4)仲丁醇的沸点由高到低的顺序为() A: (1)>(2)>(3)>(4) B: (3)>(4)>(1)>(2) C: (2)>(3)>(1)>(4) D: (2)>(4)>(1)>(3)