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> 日本福岛第一核电站事故释放出的人工放射性核素碘－131( I)一旦被人体吸入，可能会引发甲状腺疾病。下列说法正确的是 A．I是一种新元素 B．I的摩尔质量为131g C．I核内有78个中子 D．碘元素位于周期表第四周期

问题：

发布时间：2024-09-08

日本福岛第一核电站事故释放出的人工放射性核素碘－131( I)一旦被人体吸入，可能会引发甲状腺疾病。下列说法正确的是

A．I是一种新元素 B．I的摩尔质量为131g

C．I核内有78个中子 D．碘元素位于周期表第四周期

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