Chemistry-
General
Easy
Question
(Energy of electron in nth orbit of hydrogen like species having atomic
I) Ground state:
Lowest energy state of any atom or ion is called ground state of the atom It is n = 1.
II) Excited State :
States of atom other than the ground state are called excited states:
III) Ionisation energy (E):
Minimum energy required to move an electron from ground state to n = is called ionisation energy of the atom or ion.
i) Excitation Energy:
Energy required to move an electron from ground state of the atom to any other state of the atom is called
excitation energy of that state.
Excitation energy of 2ndstate = excitation energy of 1stexcited state = 1stexcitation energy = E2 ñ E1
ii) Binding EnergyëoríSeperationEnergy:
Energy required to move an electron from any state to n = is called binding energy of that state. Binding energy of ground state = E. of atom or on.
The third excitation energy of a hydrogen like species is 204 eV.
Identify the hydrogen likespecies.
- He+
- Li2+
- Be3+
- B4+
The correct answer is: B4+
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