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The electron configuration of zirconium is: [Kr]5s24d2
[Kr]
The electron configuration of selenium for a 2- ion is [Kr]4s2.3d10.4p6.
[Kr] 5s2
NO!!!! Each element has it own ground state electron configuration. Rubidium is [Kr] 5s1 Strontium is [Kr] 5s2. Notice that strontium has one MORE electron than Rubidium. The symbol [Kr] is shorthand for the full electron configuration of krypton.
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The electron configuration of zirconium is: [Kr]5s24d2
Kr is 1s22s22p63s23p64s23d104p6
[Kr],5s2,4d10,5p1
[Kr]
The electron configuration of technetium is [Kr]4d5.5s2.
The electron configuration of selenium for a 2- ion is [Kr]4s2.3d10.4p6.
[Kr] 5s2
In
Nb or niobium has the electron configuration of [Kr]4d45s1
The electron configuration of the element with the atomic number 39 (yttrium) is: [Kr]4d15s2.
NO!!!! Each element has it own ground state electron configuration. Rubidium is [Kr] 5s1 Strontium is [Kr] 5s2. Notice that strontium has one MORE electron than Rubidium. The symbol [Kr] is shorthand for the full electron configuration of krypton.