18. If 8.4 eV energy is supplied to...
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18. If 8.4 eV energy is supplied to hydrogen atom then number of spectrum line obtained in emission spectrum will be - (2) Two

NEET/Medical Exams
Chemistry
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( E alpha frac{1}{x} 2 ) for ( n=1, quad E=13 cdot 6 ) ev thers Energy assorbed ( =13 cdot 6left(1-frac{1}{x^{2}}right) ) ev where ( n=1 ) to 20 ( F ) or ( x geq 2, quad E=13 cdot 6left(1-frac{1}{(2)^{n}}right)=10.2 ) 10.2 er i 8 the lower energystede Posstble for the errission of spectral lines, Thers the energy assorbed should always be between ( 10 cdot 2 ) and 13 a 6 ev. nence, No emission takes Place when hydrogen a tom ig oxcited by giving ( 8 cdot 4 operatorname{ev} ) No. Wh spectral lincy ( =0 )
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