Phosphorus Has an Atomic Number of 15, So What Is

question 84

Multiple Choice

Phosphorus has an atomic number of 15, so what is the distribution of its electrons?

• A) The first, second, and third energy levels have 5 electrons each.
• B) The first energy level has 2, the second has 8, and the third has 5.
• C) The first energy level has 8 and the second has 7.
• D) The first energy level has 2 and the second has 13.
• E) The electron arrangement cannot be determined from the atomic number alone.

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Definitions:

Palatine Tonsils

Lymphatic tissue located on either side of the throat that helps defend the body against infection.

Lymphocytes

A type of white blood cell vital for the immune system, involved in protecting the body from infections and foreign invaders.

Infection

An infection occurs when harmful microorganisms like bacteria, viruses, fungi, or parasites invade the body, potentially causing illness or disease.

Left Lymphatic Duct

A major lymphatic vessel that drains lymph from the lower body and left side of the upper body into the bloodstream.