Chapter 4: Problem 173

What are the group number, period number, and name of the element whose electron configuration is \(1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{10} 4 p^{2} ?\)

Short Answer

Expert verified

The element with the electron configuration \(1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{10} 4 p^{2}\) is germanium (Ge), which has a group number of 14 and a period number of 4.

Step by step solution

Determine the highest energy level

The highest energy level (or principal quantum number) can be found by looking at the largest coefficient in the electron configuration. In this case, the highest energy level is 4.

Count the valence electrons

Next, we'll count the number of valence electrons by finding the number of electrons in the outermost energy level. This electron configuration is: \(1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{10} 4 p^{2}\). The valence electrons are in the 4th energy level, and there are 2 electrons in the \(4s\) orbital and 2 electrons in the \(4p\) orbital. So there are a total of \(2 + 2 = 4\) valence electrons.

Determine the group number

Since the element has 4 valence electrons, it is in Group 14 of the periodic table.

Determine the period number

The highest energy level (principal quantum number) is 4, as determined in step 1. This corresponds to the element being in Period 4 of the periodic table.

Identify the element

With a group number of 14 and a period number of 4, the element we're looking for is germanium (Ge). So the answer is:

Group number

Period number

Element name

Germanium (Ge

Unlock Step-by-Step Solutions & Ace Your Exams!

Full Textbook Solutions
Get detailed explanations and key concepts
Unlimited Al creation
Al flashcards, explanations, exams and more...
Ads-free access
To over 500 millions flashcards
Money-back guarantee
We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

Recommended explanations on Chemistry Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

What are the group number, period number, and name of the element whose electron configuration is \(1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{10} 4 p^{2} ?\)

Short Answer

Step by step solution

Determine the highest energy level

Count the valence electrons

Determine the group number

Determine the period number

Identify the element

Group number

Period number

Element name

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

The Earths Atmosphere

Inorganic Chemistry

Chemical Analysis

Organic Chemistry

Chemistry Branches

Ionic and Molecular Compounds

Study anywhere. Anytime. Across all devices.