英国研究人员 2007 年 8 月 30 日发表报告认为,全球将有 1.4 亿人因为

英国研究人员 2007 8 30 日发表报告认为,全球将有 1.4 亿人因为用水而受到砷中毒之害、导致更多的人患癌症。海带含砷超标,经水浸泡 24 小时后,其含砷量才能达到食用安全标准。下列对砷(As)的有关判断正确的是                                        

  A.砷原子序数为33,它与铝为同主族    B.砷的原子半径小于磷的原子半径

  C.砷酸的酸性比硫酸的弱                      D.砷化氢的稳定性比溴化氢的强

答案

C

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