Answer to Question #73292 in Inorganic Chemistry for pradeep sahu

Question #73292
How to calculate the ionisation energy of hydrogen atom using bohr's theory?
1
Expert's answer
2018-02-08T05:08:24-0500
The ionization energy is the amount of energy (kJ/mol or eV/atom) required for separating the electron from the atom in an unexcited state with its transformation into a positively charged ion.
Bohr (Danish scientist) formulated three postulates for hydrogen and hydrogen atoms: the postulate of stationary states, the rule of quantization of orbits, the rule of orbits.
According to Bohr's theory, the values of the energy of an atom of hydrogen are:
En = 1n2·Z2me48h2E02, n = 1,2,3,...
It follows from the formula that the energy states of the atom form a sequence of energy levels that vary depending on the value of n. An integer n defines the energy levels of an atom and is called the principal quantum number. The energy state with n = 1 is the main state. A state with n> 1 is called excited.
Emin = E1 = -13.6 eV
Emax = E∞ = 0
Ionization of an atom is the separation of an electron from an atom. The ionization energy of an atom of hydrogen is 13.6 eV.
Ei = Emax - Emin = 13.6 eV

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