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Spectrum of Li^(2+) is similar to that ...

Spectrum of `Li^(2+)` is similar to that of

A

H

B

Be

C

He

D

Ne .

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The correct Answer is:
A
Number of electrons in `Li^(2+)` is one similar to the hydrogen atom . One electron system shows similar kind of spectra . Many electron system spectra is complex due to inter-electronic repulsions.
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The spectrum of He is expected to be similar to that of

The atomic spectrum of Li^(+2) ion arises due to the transition of an electron from n_(2) to n_(1) if n_(1) +n_(2)=4 and (n_(2)-n_(1)) =2 then the wavelength of 3^(rd) line of this series in Li^(+2) ion will be

The atomic spectrum of Li^(2+) arises due to the transition of an electron from n_(2) to n_(1) level. If n_(1) +n_(2) is 4 and n_(2)-n_(1) is 2, calculate the wavelength (in nm) of the transition for this series in Li^(2+)

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Assertion : The spectrum of He^(+) is expected to be similar to that of hydrogen. Reason : He^(+) is also one electron system.

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