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Chemistry
Chemistry
Problem
A nucleus contains 82 protons and 125 neutrons. Which of the following nuclear symbols correctly represents it? a)
125
207
X
^{207}_{125}X
125
207
X
b)
82
208
X
^{208}_{82}X
82
208
X
c)
82
207
X
^{207}_{82}X
82
207
X
d)
82
125
X
^{125}_{82}X
82
125
X
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