The spectrum of Helium is expected to be simi | vedclass

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(A) The spectrum of an atom or ion depends on the number of electrons present in it.Helium $(He)$ has $2$ electrons.Among the given options,$Li^{+}$ (

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$A. Li^{+}$

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(A) The spectrum of an atom or ion depends on the number of electrons present in it.Helium $(He)$ has $2$ electrons.Among the given options,$Li^{+}$ (Lithium ion) has an atomic number of $3$,so $Li^{+}$ has $3 - 1 = 2$ electrons.Since both $He$ and $Li^{+}$ have the same number of electrons $(2)$,their spectra are expected to be similar.

The spectrum of Helium is expected to be similar to that of . . . . . .

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