Problem: For elements 1–36, there are two exceptions to the filling order as predicted from the periodic table. Draw the atomic orbital diagrams for the two exceptions and indicate how many unpaired electrons are present.

FREE Expert Solution

These two exceptions are chromium (Cr) and copper (Cu).

For Cr: The atomic number of chromium is 24, which means the neutral element has 24 electrons.

The noble gas before chromium is Ar, which accounts for 18 electrons. From 18, start with the next subshells until we have 24 electrons: 4s23d4. Arranging the subshells in order of principal quantum number, the predicted electron configuration for Cr is [Ar] 3d44s2.

90% (167 ratings)
View Complete Written Solution
Problem Details

For elements 1–36, there are two exceptions to the filling order as predicted from the periodic table. Draw the atomic orbital diagrams for the two exceptions and indicate how many unpaired electrons are present.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Paramagnetism and Diamagnetism concept. You can view video lessons to learn Paramagnetism and Diamagnetism. Or if you need more Paramagnetism and Diamagnetism practice, you can also practice Paramagnetism and Diamagnetism practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Perry's class at UTSA.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition practice problems.