Which of the following isotopes of iron has 26 protons, 30 neutrons, and 26 electrons?

Name: Which of the following isotopes of iron has 26 protons, 30 neutrons, and 26 electrons?
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Question

Quizplus · Accepted Answer

An isotope is an atom with the same number of protons and electrons, but a different number of neutrons.
The superscript before the chemical symbol of iron (Fe) represents the mass number of the isotope. The mass number is the number of neutrons and protons in the sample, and in this problem, that number is:
26 + 30 = 56

Which of the Following Isotopes of Iron Has 26 Protons