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Chemistry, 30.11.2021 21:30 josh7049

A single atom of an element has 21 neutrons, 20 electrons, and 20 protons. Which element is it? K
Zr
Ca
Sc

Which diagram represents a gas that has been ionized?
diagram 1
diagram 2
diagram 3
diagram 4

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A single atom of an element has 21 neutrons, 20 electrons, and 20 protons. Which element is it? K<...
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