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What is the noble gas configuration for Cobalt?

a
[Ar] 4s2 3d7

b
[Ar] 4s2 4d7

c
[Kr] 4s2 4d7

d
[Kr] 4s2 3d7

User Okon
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1 Answer

6 votes

Answer:

a. [Ar] 4s2 3d7

Step-by-step explanation:

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