The company turned a deaf ear to the workers’ _____ about their pay and working conditions. A. complaints B. application C. supplies D. consequences 答案:A
关于卤素(F、Cl、Br、I)的化学性质的叙述,错误的是
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A.随原子半径逐渐增大,单质跟水的反应能力逐渐减弱
B.随原子半径逐渐增大,单质的氧化性逐渐减弱
C.随离子半径逐渐增大,离子的氧化性逐渐增强
D.溴化氢与氯气混合后,会有棕红色气体出现