Biology, 16.10.2020 23:01 shalcarter2001
Why do the elements of period 4 start a new cycle of properties after the element argon?
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The electrons in the outermost energy level are primarily responsible for the properties of an element.
Additional electrons after argon begin to fill a sublevel of the n = 4 energy level.
The n = 3 energy level of argon is complete.
All the energy levels of period 4 elements are less than period 3 because the amount of energy between energy levels decrease with distance from the nucleus.
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Why do the elements of period 4 start a new cycle of properties after the element argon?
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