Respuesta :
The electron configuration of [tex]Se ^2^-[/tex] ion is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6. So, there are 2 unpaired electrons present in the ground-state electron configuration.
Se is a group 16 element, and the monoatomic ion formed by Se is [tex]Se^2^-[/tex]. Se attains a stable octet by a gain of two electrons. The electron configuration of this ion is; 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6.
What are Unpaired Electrons?
- An unpaired electron is an electron that doesn't form part of an electron pair when it occupies an atom's orbital in chemistry.
- Each of an atom's three atomic orbitals, designated by the quantum numbers n, l, and m, has the capacity to hold a pair of two electrons with opposing spins.
- Unpaired electrons are extremely uncommon in chemistry because an object carrying an unpaired electron is typically quite reactive. This is because the production of electron pairs, whether in the form of a chemical bond or as a lone pair, is frequently energetically advantageous.
- They play a crucial role in describing reaction pathways even though they normally only appear momentarily during a reaction on a thing called a radical in organic chemistry.
To learn more about unpaired electrons with the given link
brainly.com/question/14356000
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