Workbook Quiz #1 Practice Test 3 Last Question

H-Atom ($E_{n}=-\frac{hR}{n^{2}}$)

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Workbook Quiz #1 Practice Test 3 Last Question

For this problem about finding the principal quantum number from a given frequency, I used the equation frequency=R(1/n(initial)^2-1/n(final)^2), but i got a decimal answer for my n value. Is this possible? Or am I doing something wrong?

Chem_Mod
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Re: Workbook Quiz #1 Practice Test 3 Last Question

As things go when using real numbers, you very rarely get exact values. In cases like this, one should round off to the nearest integer. However, the answer should still be fairly close to an integer, like 1.999 or something on that order. Remember, atomic levels are discrete so there cannot be non-integer values for n - it must always be 1, 2, 3...