1.

An ionic atom equivalent to hydrogen atom has wavelength equal to 1/4 of the wavelengths of hydrogen lines. The ion will be                                                                 [RPET 1997]

A. \[H{{e}^{+}}\]
B. \[L{{i}^{++}}\]
C. \[N{{e}^{9+}}\]
D. \[N{{a}^{10+}}\]
Answer» B. \[L{{i}^{++}}\]


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