Models of Matter A.2 The Nuclear Atom (id: 96c56127d)

本题目来源于试卷: Models of Matter A.2 The Nuclear Atom，类别为 IB化学

[单选题]
Element Z consists of two isotopes: $^{38}Z$ and $^{39}Z$.What is the approximate natural abundance of $^{38}Z$?

$M_r$(Z)=38.92

A. 9.2%
B. 92%
C. 8%
D. 80%


参考答案:  C


本题详细解析:

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