A sample of hydrogen gas in its ground state is irradiated with photons of 10 . 2 eV energies. The radiation from the above sample is used to irradiate two other samples of excited ionized H e + and e

Question

A sample of hydrogen gas in its ground state is irradiated with photons of $10.2 eV$ energies. The radiation from the above sample is used to irradiate two other samples of excited ionized $H e^{+}$ and excited ionized $L i^{2 +}$ , respectively. Both the ionized samples absorb the incident radiation. How many spectral lines are obtained in the spectra of $L i^{2 + ?}$

Options:

Answer:

B

Solution:

$L i^{+ 2}$ is excited from $n = 3$ to $n = 6$

no of spectral lines

So, $N = \frac{n (n - 1)}{2}$

$N = 15$

TestHub · Accepted Answer

L i + 2 is excited from n = 3 to n = 6 no of spectral lines So, N = n n - 1 2 N = 15

Physics - Modern Physics Question with Solution | TestHub

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