Answer:
Fe(OH)2
Explanation:
Iron hydroxides are chemical compounds that appear as precipitates after alkalizing solutions containing iron salts, both in their valence or degree of oxidation (III) and (II).
Hydroxide, in both cases, is a gelatinous colloid of difficult filtration that can be considered a hydrated oxide, iron (II) hydroxide is whitish in color and requires more alkalinization, above 7.
The transition of an electron from an excited energy state to the ground state always results in B. the emission of electromagnetic radiation.
The electron is going from a high-energy state to one of low energy, so it emits this excess energy as electromagnetic radiation. This <em>may be visib</em>le light, but it <em>may also not be visible</em> to our eyes.
Answer:
The Pauli Exclusion Principle
Explanation:
The Pauli Exclusion Principle states that, in an atom or molecule, no two electrons can have the same four electronic quantum numbers. As an orbital can contain a maximum of only two electrons, the two electrons must have opposing spins.
I think the correct answer would be direct additives. Not proper handling of cleaning agents especially in areas where food are prepared or served would most likely add chemicals to the food which is harmful to the consumer. Hope this helps.
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