The elements having the ground-state electronic configurations different from what we would expect from their positions in the periodic table are to be listed. Concept Introduction: The distribution of the electrons present in an atom in the respective atomic orbitals is known as the electronic configuration. However, some elements have different ground-state configurations than expected from their placement in the periodic table. To determine: The elements having different ground-state configurations than expected from their placement in the periodic table.
The elements having the ground-state electronic configurations different from what we would expect from their positions in the periodic table are to be listed. Concept Introduction: The distribution of the electrons present in an atom in the respective atomic orbitals is known as the electronic configuration. However, some elements have different ground-state configurations than expected from their placement in the periodic table. To determine: The elements having different ground-state configurations than expected from their placement in the periodic table.
The elements having the ground-state electronic configurations different from what we would expect from their positions in the periodic table are to be listed.
Concept Introduction:
The distribution of the electrons present in an atom in the respective atomic orbitals is known as the electronic configuration. However, some elements have different ground-state configurations than expected from their placement in the periodic table.
To determine: The elements having different ground-state configurations than expected from their placement in the periodic table.
Expert Solution & Answer
Answer to Problem 140AE
Answer
The elements
Cr,Cu,Nb,Mo,Tc,Ru,Rh,Pd,Ag,Pt,AuandRg exhibit electronic configurations different from their expected ones.
Explanation of Solution
The filling of orbitals according to their energy levels gives the expected ground-state electronic configurations for the elements. And the following elements exhibit ground-state configurations that are different from what was expected with respect to their placement in the periodic table.
In the case of Chromium and copper, the expected configuration in accordance to the Aufbau principle would be,
This happens as completely filled sub levels are more stable than the partly filled ones. Also, a half filled sub level is more stable than the partly filled one.
In the case of Niobium, the expected configuration in accordance to the Aufbau principle would be,
Nb=(1s22s22p63s23p63d104s24p65s24d3)
But the actual configuration it exhibits is,
Nb=(1s22s22p63s23p63d104s24p65s14d4)
The repulsion of two electrons within the same orbital pushes one electron from the
5s to the
4d orbital.
Some other elements that exhibit electronic configurations different from expected ones are,
The compounds that portray the
d10 systems do so in order to attain extra stability. In case of the
RuandRh, such configurations are attained by these compounds in order to attain extra stability by attaining a completely filled
T2g orbitals.
Conclusion
The elements having the ground-state electronic configurations different from what we would expect from their positions in the periodic table are
Cr,Cu,Nb,Mo,Tc,Ru,Rh,Pd,Ag,Pt,AuandRg.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Predict the organic product that forms in the reaction below:
H
+
гон
OH
H+
H+
☑
O
Note: You may assume you have an excess of either reactant if the reaction requires more than one of those molecules to form the
product.
In the drawing area below, draw the skeletal ("line") structure of the missing organic product X.
Explanation
Check
Click and drag to start drawing a
structure.
S
2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Cente
In the analysis of Mg content in a 25 mL sample, a titration volume of 5 mL was obtained using 0.01 M EDTA. Calculate the Mg content in the sample if the Ca content is 20 ppm
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Quantum Numbers, Atomic Orbitals, and Electron Configurations; Author: Professor Dave Explains;https://www.youtube.com/watch?v=Aoi4j8es4gQ;License: Standard YouTube License, CC-BY