Which species has the following electronic configuration: 1s²2s²2p⁶3s²3p⁶ ?

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The electron configuration indicates that there are 15 electrons in total, with the highest energy level being the 3p subshell. This corresponds to the element phosphorus, which has a ground state electron configuration of [Ne]3s23p3. The superscripts in the given electron configuration indicate the number of electrons in each subshell, with S representing the spin quantum number and U representing the spin orientation. The minus sign in the S1U1P1 subscripts indicates an electron with spin down, while the plus sign in MgS1U1P1+2S1S1P0 would indicate an electron with spin up in the 3p orbital, which is not possible due to the Pauli exclusion principle.

Which Species Has the Following Electronic Configuration: 1s22s22p63s23p6

Which Species Has the Following Electronic Configuration: 1s²2s²2p⁶3s²3p⁶