Chemistry, 18.10.2020 08:01 zeesharpe05
Which of the following represents an isotope containing 39 protons, 39 electrons, and 30 neutrons?
a. Yttrium-39
X þ. Yttrium-108
C. Yttrium-78
d. Yttrium-69
Answers: 1
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Which of the following represents an isotope containing 39 protons, 39 electrons, and 30 neutrons?...
Computers and Technology, 09.11.2019 04:31