Electron spin

[Gabi_Maldonado_1B]

When filling the p,d, and f orbitals with electrons, is it correct to put electrons in each orbital with parallel spins, before pairing the electrons in orbitals and reversing the spin of the second one?

[Xuan Lai 1H]

Yes this is correct. Hund's rule states that orbitals of the same energy must first be occupied singly (parallel spins) before doubly occupied, and when that is the case, then the electrons have opposite spins.

[Eszter Kovacs 1A]

Yes, according to Hund's rule subshells are filled up by parallel electrons in each orbital before they are paired up.

[Jessica Phung 1E]

Yes, this is correct. Just to note, in any case where you see it otherwise, the atom either has excited electrons or the circumstance is nonexistent and thus the answer would be that there are no possible scenarios.

[Alex Luong 3H]

On that note, does it matter which spin value each electron has? Or does it only matter if they are parallel or paired?

[Claire Kim 1F]

When filling the p,d, and f orbitals with electrons, is it correct to put electrons in each orbital with parallel spins, before pairing the electrons in orbitals and reversing the spin of the second one?

Yes, this is true. This is according to Hund's Rule which states that each orbital needs to have one spin before any of them have a full orbital.

[Shreya Thyagarajan Dis1A]

On that note, does it matter which spin value each electron has? Or does it only matter if they are parallel or paired?

I do believe it matters which spin value the electrons have, because electrons in the same orbital cannot have the same spin.

[Jahnavi Srinivas 2H]

You are correct; Hund's rule states that orbitals must be filled by individual parallel electrons before they are paired with a second electron.