Identify the element, and write its condensed ground-state electron configuration?
One reason why spectroscopists study excited states is to gain insights into the energies of orbitals that are unoccupied in an atom's ground state. Each of the following electron configurations represents an atom in an excited state. Please identify the corresponding element and write its condensed ground-state electron configuration for each case:
(a) 1s²2s²2p⁶3s¹3p¹: [ ]
(b) 1s²2s²2p⁶3s²3p⁴s¹: [ ]
(c) 1s²2s²2p⁶3s²3p⁶4s²3d⁴p¹: [ ]
(d) 1s²2s²2p⁵3s¹: [ ]
1 Answers
a) 1s2, 2s2, 2p6, 3s1, 3p1
1s2, 2s2, 2p6, 3s2,
Magnesium because it has 12 electrons
b) 1s2, 2s2, 2p6, 3s2, 3p4, 4s1
1s2, 2s2, 2p6, 3s2, 3p5
Chlorine, has 17 electrons
c) 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d4, 4p1
1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d5
Manganese, has 25 electrons
d) 1s2, 2s2, 2p5, 3s1
1s2, 2s2, 2p6
Neon, has 10 electrons
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