Answer:
the correct answer is c
Explanation:
becuase i had the same question
More information so I can answer please.
Chromium has the electron configuration [Ar]4s13d5 and exhibits oxidation numbers 2+, 3+, and 6+. When chromium loses two electrons, it forms the Cr2+ ion and has the configuration [Ar]3d4.
The Answer is B. [Ar]3d4
Answer: 129.93577
There-
active listening
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understanding resources
from my own opinion
