Once formed, how many valence electrons does an anion hold?

Chemistry

1 answer:

Elena-2011 [213]3 years ago

7 0

Answer:

Anions. Some atoms have nearly eight electrons in their valence shell and can gain additional valence electrons until they have an octet. When these atoms gain electrons, they acquire a negative charge because they now possess more electrons than protons. Negatively charged ions are called anions.

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Complete Question

A student is extracting caffeine from water with dichloromethane. The K value is 4.6. If the student starts with a total of 40 mg of caffeine in 2 mL of water and extracts once with 6 mL of dichloromethane

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Answer:

The mass of caffeine extracted is $P = 39.8 \ mg$