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Which elements have the following electron configurations? [Ar]4s23d8 [Ar]4s23d104p3 [He]2s22p6...

Question:

Which elements have the following electron configurations?

(A) {eq}\left [ Ar \right ]3d^{8}4s^{2} {/eq}

(B) {eq}\left [ Ar \right ]3d^{10}4s^{2}4p^{3} {/eq}

(C) {eq}\left [ He \right ]2s^{2}2p^{6} {/eq}

(D) {eq}\left [ He \right ]2s^{2} {/eq}

Electronic Configuration:

If we know the electronic configuration of an element and we need to know the element whose electronic configuration has been given, then we can do so by knowing the number of protons of that atom.

The number of protons helps us to know the atomic number, which in turn helps us to know the element.

Answer and Explanation: 1

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Part (A) : {eq}\left [ Ar \right ]3d^{8}4s^{2} {/eq}

This element is nickel and it has the atomic number 28.

Part (B) : {eq}\left [ Ar \right...

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Electron Configurations in the s, p & d Orbitals

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Chapter 47 / Lesson 8
13K

What are electron configuration orbitals? Learn about the s, p, and d orbital electrons, and use the periodic table to understand orbitals and placement.


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