The extra stability of half-filled subshells | vedclass

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(B) The extra stability of half-filled subshells is attributed to the following factors:$(I)$ Symmetrical distribution of electrons: Electrons are dis

Vedclass · Accepted Answer

$(A), (B), (D)$ and $(E)$ only

Vedclass · Answer

(B) The extra stability of half-filled subshells is attributed to the following factors:$(I)$ Symmetrical distribution of electrons: Electrons are distributed symmetrically in the orbitals,which leads to lower energy.$(II)$ Larger exchange energy: The number of possible exchanges for electrons with parallel spins is maximum in half-filled and fully-filled configurations,resulting in higher exchange energy and greater stability.$(III)$ Smaller coulombic repulsion: Due to the symmetrical arrangement,the inter-electronic repulsion is minimized.$(IV)$ Smaller shielding of electrons by one another: The effective nuclear charge experienced by the electrons is optimized in these configurations.Therefore,statements $(A), (B), (D),$ and $(E)$ are correct.

Similar Questions

Which one of the following configurations represents a noble gas?

Which of the following are correct?
$(1)$ Electron density in $XY$ plane for $d_{x^2-y^2}$ orbital is zero.
$(2)$ The energy of $3p$-orbital is higher than the energy of $2p$-orbital.
$(3)$ $3p_z$-orbital has one angular node.
$(4)$ $4f$-orbital has no radial node.

The maximum number of electrons that can be accommodated in $f-$ shell is:

Which one represents an impossible arrangement of quantum numbers $(n, l, m, s)$?

How is the angular node determined? State the number of angular nodes for $s, p, d,$ and $f$ orbitals.

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