Number of electrons in Cobalt (ii) & full electron configuration & orbital diagram ( last subshell...

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Question

Number of electrons in Cobalt (ii) & full electron configuration & orbital diagram ( last subshell ) valence , and magnetism

do elements with (ii) differ from those without ?

science chemistry

Answer 1

Answer #1

Cobalt(II) is the same as Co²⁺ that is, an atom of cobalt that has lost two of its valence electrons. Consequently, Co is not the same as Co(II).

The cobalt atom has 27 electrons, so the Co(II) species has two less than this: 25.

As for the electron configuration:

Co²⁺: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁷

The orbital diagram (full) is:

It's valence is 2+ and it is paramagnetic, since it has 3 unpaired electrons (in the 3d orbital).

Answer 2

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