Consider the following electronic arrangements for the d configuration
1L 1L 1
1L
1
1111
(b)
(a)
(c)
(i) which of these represents the ground state
(ii) which configuration has the maximum exchange energy. c
State and explain pauli exclusion principle.
Define orbital? what are the n and l values for 3p, and 4d 2,2 electron?
Explain briefly the time independent schrodinger wave equation?
Calculate the uncertainty in position of an electron, if Av = 0.1% and v
ms!
Determine the values of all the four qua
numbers of th
oth
Answers
NANBA..
Hund's rule of maximum multiplicity states that in the ground state of an atom/molecule, the electronic configuration with lowest energy is the one with the highest value of spin multiplicity. This implies that, low energy orbitals are first completely filled and in case of degenerate orbitals (two or more orbitals of equal energy), each orbital will occupy single electron with same spin (either all +
2
1
≡ ↑ or−
2
1
≡↓). before filling them in pairs.
For C electronic configuration is: 1s
2
2s
2
2p
2
. Following the hund's rule, 1s and 2s should be fullyfilled with opposite electron spin. 2p has three degenerate orbitals as p
x
, p
y
, p
z
. So any two can have the two electrons both with same spin i.e. both ↑ or both ↓.
Above conditions are satisfied by option A only. Therefore A is correct choice...
Hope the answer is usefull..