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fomenos
3 years ago
7

Identify the element that has a ground state electronic configuration of [kr]5s24d5.

Chemistry
2 answers:
8_murik_8 [283]3 years ago
7 0
Elements in their ground state are neutral, so the number of electrons they have is equivalent to the number of protons. The electrons in this element are:
36 (from Kr) + 2 in the 5s orbital + 5 in the 4d orbital
= 43 electrons

So the protons must also be 43. Looking at the periodic table at atomic number 43, we see that this element is Technetium
mash [69]3 years ago
4 0

Answer:

the correct answer is:

[Kr]5s24d5

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