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据报道1994年12月科学家发现了一种新元素，它的原子核内有161个中子，其相对原子质量为272，则下列说法错误的是

A. 该元素原子质子数是111 B. 该元素原子核外电子数是111

C. 该元素原子核电荷数是161

D. 该元素的一个原子的质量是一个碳原子质量的272/12倍