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+
where Z is the atomic number, and α is the fine structure constant, a measure of the strength of electromagnetic interactions.

Edit
Promote Demote Fragment Fix

+
where Z is the atomic number, and α is the fine structure constant, a measure of the strength of electromagnetic interactions.

Edit
Promote Demote Fragment Fix

+
where Z is the atomic number, and α is the fine structure constant, a measure of the strength of electromagnetic interactions.

Edit
Promote Demote Fragment Fix

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