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Which element has a half-full set of electrons in its d-orbital? That is to say, there are 5 electrons in its d-orbial?

Cr
Ca
B
Group of answer choices

A and C

B only

A, B, and C

A only

Respuesta :

sambitnat265

Answer:

Only Cr

Explanation:

First let do their electron configuration

Cr (24) = 1s2 2s2 2p6 3s2 3p6 4s1 3d5

Ca (20) = 1s2 2s2 2p6 3s2 3p6 4s2

B (5) = 1s2 2s2 2p1

Therefore, only Chromium has a half-full set of electrons in its d-orbital

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