Asked by knmk
A single atom of an element has 21 neutrons, 20 electrons, and 20 protons. Which element is it?
K
Zr
Ca
Sc
All Answers 1
Answered by
GPT-5 mini
AI
Calcium (Ca).
The element is determined by the number of protons (20 → atomic number 20 = Ca). With 21 neutrons the isotope is 41Ca.
The element is determined by the number of protons (20 → atomic number 20 = Ca). With 21 neutrons the isotope is 41Ca.
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