Who discovered principal quantum number?
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Answer:
Niels Bohr
Explanation:
The 4f subshell has n = 4 and ℓ = 3. Examples of this will play out in what follows. I. The Principal Quantum Number (signified by the letter 'n'): This quantum number was the first one discovered and it was done so by Niels Bohr in 1913.
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Answer:
Neils bohr..............
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