The Student Room Group

orbital

are 2 electrons in the same orbital with opposite spins classed as a lone pair?
Original post by WWEKANE
are 2 electrons in the same orbital with opposite spins classed as a lone pair?


Yes, provided the orbital is not a bonding orbital.
Reply 2
@Eimmanuel

sulphur has the outer shell of 3s2 3p4 so it has 2 orbitals filled so 2 lone pairs and 2 unpaired electrons which can react

so how does sulfur form SF4 if it has only 2 electrons available to form covalent bonds
Original post by WWEKANE
@Eimmanuel

sulphur has the outer shell of 3s2 3p4 so it has 2 orbitals filled so 2 lone pairs and 2 unpaired electrons which can react

so how does sulfur form SF4 if it has only 2 electrons available to form covalent bonds


Have you learnt d-orbital in 3rd shell?
Reply 4
@Eimmanuel
yes but I thought electrons must fill each orbital before moving to the D orbital so 3P2 3P6 then D or is this not the case
Original post by WWEKANE
@Eimmanuel
yes but I thought electrons must fill each orbital before moving to the D orbital so 3P2 3P6 then D or is this not the case


Bonding and filling of electrons are two different phenomena.
When sulfur is bonded to 4 fluorine atoms, it undergoes what sometimes is called sp3d hybridization.
You can watch the following video to see what is "hybridization" and is going on.
https://www.youtube.com/watch?v=8n7pOeHjouQ

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