The energy of 1^st orbit in a hydrogen atom __________(a) 3.18×10^–12 J(b) –2.18×10^–18 J(c) –3.18×10^–18 J(d) 2.18×10^–18 JI have been asked this question during an online exam.I'm obligated to ask this question of Bohr’s Model for Hydrogen Atom topic in portion Structure of Atom of Chemistry – Class 11

The energy of 1^st orbit in a hydrogen atom __________(a) 3.18×10^–

1.	The energy of 1^st orbit in a hydrogen atom __________(a) 3.18×10^–12 J(b) –2.18×10^–18 J(c) –3.18×10^–18 J(d) 2.18×10^–18 JI have been asked this question during an online exam.I'm obligated to ask this question of Bohr’s Model for Hydrogen Atom topic in portion Structure of Atom of Chemistry – Class 11
Answer» CORRECT CHOICE is (b) –2.18×10^–18 J Explanation: The ENERGY of an nth ORBIT in a hydrogen atom is given by the FORMULA En = -RH/n^2, where is the energy of nth orbit and RH is the Rydberg constant. The energy of 1^st orbit in a hydrogen atom = -2.18 x 10^-18 J/1 = -2.18 x 10^-18 J.

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