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मूल अवस्था में यदि हाइड्रोजन परमाणु के एक इलेक्ट्रॉन की ऊर्जा -13.6eV हो तो द्वितीय उत्तेजित कक्षा में इसका मान होगा :
A. `-1.51eV`
B. `-3.4eV1`
C. `-6.04 eV`
D. `-13.6 eV`

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(क) द्वितीय उत्तेजित अवस्था का अर्थ है तृतीय ऊर्जा स्तर
`E_(3)= ( E_(1))/(3^(2))= - (13.6 )/( 9) = - 1.51 eV`

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