3 years ago

Iron (III) oxide - what does the III mean?

1 answer:

7 0

Answer:

The iron is in the +3 oxidation state, which is what the III means.

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Katena32 [7]

ANSWER

2 valence electrons

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The electronic configuration is given below as

$1s^22s^22p^62s^23p^64s^2$

Looking at the configuration, you will see that the last energy carries 2 electrons

Hence, the valence electrons are 2

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