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Reply fast ! thligh Q.19 Q.20 ted iati01 In an orbit of hydrogen atom the kinetic energy ofelectron is 3.4 eV. The distance ofthat electron from the nucleus is (A) 0.529Å (B) 2.116Å (C) 4.761Å (D) None ofthese What should be the ratio of the diffelence between energies of first and second orbits to the difference between second and third orbits of hydrogen atom? (B) 27/5 (C) 9/4 Q.21 Howmuchminimum energy should be absorbedbyahydrogenatomingroundstatetoreachexcited villi State'? (A) + 10.2 ev (D)+1.5eV (C) +3.4 ev (B) +13.4eV Website : www.raoiit.com Rao IIT Academy

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