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Chapter 3: Problem 64

Write the electron configuration of phosphorus.

Short Answer

Expert verified
The electron configuration of phosphorus is \(1s^2 2s^2 2p^6 3s^2 3p^3\).

Step by step solution

01

Arrange electrons in energy levels

The first two electrons of phosphorus go in the 1s orbital, the next two go in the 2s orbital. Then the energy levels start to fill in the order of increasing energy. So the next 6 electrons fill the 2p orbital.
02

Continue filling with the rest of the electrons

The next two electrons go into the 3s orbital and the next six into 3p.
03

Write the final electron configuration of phosphorus

Combining all these, the electron configuration of phosphorus which has 15 electrons becomes \(1s^2 2s^2 2p^6 3s^2 3p^3\).

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Most popular questions from this chapter

Calculate Numbers of Protons, Electrons, and Neutrons. A graphing calculator can run a program that calculates the numbers of protons, electrons, and neutrons given the atomic mass and numbers for an atom. For example,given a calcium-40 atom, you will calculate the numbers of protons, electrons, and neutrons in the atom. Go to Appendix C. If you are using a TI-83 Plus, you can download the program NUMBER and data and can run the applica- tion as directed. If you are using another calculator, your teacher will provide you with keystrokes and data sets to use. After you have run the program, answer the questions below. \begin{equation} \begin{array}{l}{\text { a. Which element has the most protons? }} \\ {\text { b. How many neutrons does mercury-zol }} \\ {\text { have? }} \\ {\text { c. Carbon-12 and carbon-14 have the same }} \\ {\text { atomic number. Do they have the same }} \\ {\text { number of neutrons? Why or why not? }}\end{array} \end{equation}

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