Hund’s rule states that: Every orbital in a sublevel is singly occupied before any orbital is doubly occupied. All of the electrons in singly occupied orbitals have the same spin (to maximize total spin)..
Q. Who discovered the exclusion principle?
Wolfgang Pauli’s
Table of Contents
- Q. Who discovered the exclusion principle?
- Q. Why is Hund’s rule important?
- Q. How will you explain Hund’s rule of multiplicity?
- Q. What is Bohr bury rule?
- Q. What is the ground state term symbol for ti2+?
- Q. Why half filled orbitals are more stable?
- Q. Which orbitals are most stable?
- Q. Why is d3 more stable than d5?
- Q. Which Subshell is more stable?
Q. Why is Hund’s rule important?
The reason why Hund’s rule is important is because you need to know the ground state of an element to then further determine the orbital/electron configuration of an ion.
Q. How will you explain Hund’s rule of multiplicity?
Hunds Rule of Maximum Multiplicity rule states that for a given electron configuration, the term with maximum multiplicity falls lowest in energy. According to this rule electron pairing in p, d and f orbitals cannot occur until each orbital of a given subshell contains one electron each or is singly occupied.
Q. What is Bohr bury rule?
(a) Bohr Bury Rules: (i) The maximum number of electrons present in a shell is given by the formula 2n2 (where n is shell no.) (ii) The maximum number of electrons that can be accommodated in the outer most orbit is 8. (iii) Electron are not accommodated in a given shell, unless the inner shells are filled.
Q. What is the ground state term symbol for ti2+?
10.2. The ground state electron configuration of ground state gaseous neutral titanium is [Ar]. 3d2. 4s2 and the term symbol is 3F2.
Q. Why half filled orbitals are more stable?
The orbitals in which the sub-shell is exactly half-filled or completely filled are more stable because of the symmetrical distribution of electrons. When the orbitals are half-filled or completely filled then the number of exchanges is maximum. Therefore, its stability is maximum.
Q. Which orbitals are most stable?
It is observed that the noble gases have the most stable orbital configuration. The reason behind it is their valence shell is completely filled. In the case of helium, the two valance electrons exist in 1s sub-level, and other eight electrons are in the s and p sub-shells.
Q. Why is d3 more stable than d5?
Since water is a weak ligand it cannot force pairing of the unpaired d electrons to make room for an inner orbital complex. Since the Inner orbital (low spin) complex is more stable than the outer orbital (high spin) complex. Thus d3 configuration is more stable than d5 configuration in aqueous medium.
Q. Which Subshell is more stable?
The exactly half-filled and fully filled orbitals have greater stability than other configurations. The reason for their stability are symmetry and exchange energy. The electrons present in the different orbitals of the same sub-shell can exchange their positions.
