A. 1s electron of helium
B. 1s electron of potassium
C. 23 electron of boron
D. 2s electron of carbon

Correct Answer: Option A

A. 1s electron of helium

SEE ALSO  Consider the following equilibrium system: 2SO2(g) + O2(g) ⇌ 2SO3(g). The addition of more O2(g) to the system will shift the equilibrium position to the?

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