Ch.6 - Electronic Structure of Atoms

Brown - Chemistry: The Central Science 15th Edition

Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970Not the one you use?Change textbook

Brown 15th Edition

Ch.6 - Electronic Structure of Atoms

Problem 77d

Chapter 6, Problem 77d

Identify the specific element that corresponds to each of the following electron configurations and indicate the number of unpaired electrons for each: (d) 3Kr45s24d105p4.

Verified step by step guidance

Identify the noble gas in the electron configuration and use it as a reference point. In this case, the noble gas is Krypton (Kr).

Write out the electron configuration starting from the noble gas. After Kr, the configuration continues with 5s2, 4d10, 5p4.

Determine the element by adding the electrons in the configuration beyond Kr to the atomic number of Kr (36). The total number of electrons is 36 (Kr) + 2 (5s) + 10 (4d) + 4 (5p) = 52.

Locate element 52 on the periodic table to identify it as Tellurium (Te).

Count the number of unpaired electrons in the outermost p orbital (5p4). Since the p orbital can hold up to 6 electrons and 5p4 configuration means 4 electrons are present, there are 2 unpaired electrons in the 5p orbital.

Verified video answer for a similar problem:

This video solution was recommended by our tutors as helpful for the problem above.

Video duration:

Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Electron Configuration

Electron configuration describes the distribution of electrons in an atom's orbitals. It is represented by a series of numbers and letters that indicate the energy levels and types of orbitals occupied by electrons. Understanding electron configurations is essential for determining an element's identity and its chemical properties.

Periodic Table and Element Identification

The periodic table organizes elements based on their atomic number and electron configurations. Each element corresponds to a unique electron configuration, which helps in identifying the element. By analyzing the given electron configuration, one can determine the element's position in the periodic table and its associated properties.

Unpaired Electrons

Unpaired electrons are those that occupy an orbital alone rather than in pairs. The number of unpaired electrons in an atom is significant as it influences the atom's magnetic properties and its reactivity. Identifying unpaired electrons is crucial for understanding the element's behavior in chemical reactions and bonding.

Related Practice

Textbook Question

Write the condensed electron configurations for the following atoms and indicate how many unpaired electrons each has: (f) Lu.

425

views

Textbook Question

Consider the two waves shown here, which we will consider to represent two electromagnetic radiations: (b) What is the frequency of wave A?

605

views

Textbook Question

Consider the two waves shown here, which we will consider to represent two electromagnetic radiations: (a) What is the wavelength of wave A?

489

views

Textbook Question

Identify the specific element that corresponds to each of the following electron configurations and indicate the number of unpaired electrons for each: (a) 1s²2s² (b) 1s²2s²2p⁴

574

views

Textbook Question

The following electron configurations represent excited states. Identify the element and write its ground-state condensed electron configuration. (b) 3Ar44s13d104p25p1

views

Textbook Question

Write the condensed electron configurations for the following atoms and indicate how many unpaired electrons each has: (a) Mg (b) Ge (c) Br (d) V (e) Y.

927

views