[单选题]
How many electrons are there in $^{35}_{17}$CI$^{1-}$?
A. 17
B. 18
C. 35
D. 36
参考答案: B
本题详细解析: The atomic number is 17, hence there are 17 protons and 17 electrons in the atom (since atom is neutral). The ion with a charge of (1-) means that the atom has gained 1 electron and therefore, contains 18 electrons.
