医学研究证明,用放射性53135I治疗肿瘤可收到一定疗效,下列有关531

医学研究证明,用放射性53135I治疗肿瘤可收到一定疗效,下列有关53135I的叙述正确的是

A.53153I是碘的一种同素异形体  B.53135I是一种新发现的元素

C.53135I核内的中子数与核外电子数之差为29

D.53135I位于元素周期表中第4周期ⅦA族

答案

C


解析:

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