QuestionAugust 23, 2025

6.80 The following electron configurations represent excited states. Identify the element and write its ground-state condensed electron configuration. 1s^22s^22p^43s^1 b. [Ar]4s^13d^104p^25p^1 [Kr]5s^24d^25p^1

6.80 The following electron configurations represent excited states. Identify the element and write its ground-state condensed electron configuration. 1s^22s^22p^43s^1 b. [Ar]4s^13d^104p^25p^1 [Kr]5s^24d^25p^1
6.80 The following electron configurations represent excited states. Identify the element and
write its ground-state condensed electron configuration.
1s^22s^22p^43s^1
b. [Ar]4s^13d^104p^25p^1
[Kr]5s^24d^25p^1

Solution
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Answer

a. Fluorine, 1s^{2}2s^{2}2p^{5} ### b. Tin, [Kr]5s^{2}4d^{10}5p^{2} ### c. Niobium, [Kr]5s^{1}4d^{4} Explanation 1. Identify the Element for 1s^{2}2s^{2}2p^{4}3s^{1} Count total electrons: 9. This corresponds to Fluorine (F). 2. Write Ground-State Configuration for Fluorine Ground-state configuration is 1s^{2}2s^{2}2p^{5}. 3. Identify the Element for [Ar]4s^{1}3d^{10}4p^{2}5p^{1} Count total electrons: 36 + 1 + 10 + 2 + 1 = 50. This corresponds to Tin (Sn). 4. Write Ground-State Configuration for Tin Ground-state configuration is [Kr]5s^{2}4d^{10}5p^{2}. 5. Identify the Element for [Kr]5s^{2}4d^{2}5p^{1} Count total electrons: 36 + 2 + 2 + 1 = 41. This corresponds to Niobium (Nb). 6. Write Ground-State Configuration for Niobium Ground-state configuration is [Kr]5s^{1}4d^{4}.

Explanation

1. Identify the Element for $1s^{2}2s^{2}2p^{4}3s^{1}$<br /> Count total electrons: 9. This corresponds to Fluorine (F).<br /><br />2. Write Ground-State Configuration for Fluorine<br /> Ground-state configuration is $1s^{2}2s^{2}2p^{5}$.<br /><br />3. Identify the Element for $[Ar]4s^{1}3d^{10}4p^{2}5p^{1}$<br /> Count total electrons: 36 + 1 + 10 + 2 + 1 = 50. This corresponds to Tin (Sn).<br /><br />4. Write Ground-State Configuration for Tin<br /> Ground-state configuration is $[Kr]5s^{2}4d^{10}5p^{2}$.<br /><br />5. Identify the Element for $[Kr]5s^{2}4d^{2}5p^{1}$<br /> Count total electrons: 36 + 2 + 2 + 1 = 41. This corresponds to Niobium (Nb).<br /><br />6. Write Ground-State Configuration for Niobium<br /> Ground-state configuration is $[Kr]5s^{1}4d^{4}$.
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