200分求一道物理题,求懂英文的高手来帮下忙A certain isotope has 80 protons and 122 neutrons in its nucleus.Identify the element involved and find the atomic and mass numbers.Atomic number=Mass number=
问题描述：
200分求一道物理题,求懂英文的高手来帮下忙
A certain isotope has 80 protons and 122 neutrons in its nucleus.Identify the element involved and find the atomic and mass numbers.
Atomic number=
Mass number=
答
这道题翻译：
一个核素的质子数是80，中子数是122，那么他的原子序数是多少？质量数是多少？
很显然
你应该知道答案了吧。
Z＝80
A＝80＋122
答
(a) the distance=Ltanθ=Lθ=Lλ/a=1400*544.6×10^(-6)/0.4mm=1.9mm (b) the wideth=2Ltanθ=3.8mm 题目的大意是：一列波长为544.
答
汞（Hg）
Atomic number=80
Mass number=202