问题
选择题
下列物质中,含有极性共价键的是
(1)N2 (2)H2O (3)CCl4 (4)Na2O2 (5)NaOH (6)Na2O
A.(1)(2)(3)
B.(2)(3)(5)
C.(4)(5)(6)
D.(2)(4)(6)
答案
答案:B
下列物质中,含有极性共价键的是
(1)N2 (2)H2O (3)CCl4 (4)Na2O2 (5)NaOH (6)Na2O
A.(1)(2)(3)
B.(2)(3)(5)
C.(4)(5)(6)
D.(2)(4)(6)
答案:B