Electron Configurations and Orbital Diagrams

The video tutorial explains how to write orbital filling diagrams and electron configurations, focusing on elements like Sodium, Chlorine, Fluorine, Calcium, and Iron. It covers the basics of atomic numbers, electron distribution, and the formation of ions. The tutorial emphasizes the importance of practice and provides examples for each element, including their neutral and ionized states. The video also touches on the complexities of transition metals and offers additional resources for further learning.

What is the atomic number of Sodium, and how many electrons does it have in a neutral state?

• 11, with 11 electrons

• 12, with 12 electrons

• 10, with 10 electrons

• 13, with 13 electrons

In the orbital diagram for Sodium, how many electrons are placed in the 3s orbital?

• 2 electrons

• 1 electron

• 0 electrons

• 3 electrons

How many electrons does Chlorine have in its neutral state?

• 17 electrons

• 18 electrons

• 19 electrons

• 16 electrons

What happens to the electron configuration of Chlorine when it becomes a chloride ion?

• It gains two electrons

• It loses two electrons

• It gains one electron

• It loses one electron

What is the electron configuration for neutral Fluorine?

• 1s2 2s2 2p5

• 1s2 2s2 2p6

• 1s2 2s2 2p4

• 1s2 2s1 2p5

When Fluorine becomes a fluoride ion, what change occurs in its electron configuration?

• It gains one electron

• It loses one electron

• It loses two electrons

• It gains two electrons

How many electrons does Calcium have in its neutral state?

• 20 electrons

• 24 electrons

• 18 electrons

• 22 electrons

What happens to Calcium's electron configuration when it forms a Ca 2+ ion?

• It gains one electron

• It loses two electrons

• It gains two electrons

• It loses one electron

How many electrons are in the d orbital for Iron in its neutral state?

• 5 electrons

• 10 electrons

• 8 electrons

• 6 electrons

What is the main purpose of using orbital diagrams and electron configurations?

• To calculate the atomic radius

• To find the number of protons

• To describe the location and energy levels of electrons

• To determine the atomic mass