Periodic Table Concepts and Valence Electrons

This video tutorial reviews key concepts from recent classes, focusing on drawing Bohr models and Lewis structures. It begins with an introduction and required materials, followed by detailed instructions on creating Bohr models for chlorine, magnesium, and carbon. The tutorial then introduces Lewis structures, demonstrating how to draw them for chlorine, cesium, and bromine. Finally, it provides useful tips for using the periodic table effectively.

What materials are needed to follow along with the video tutorial?

• A blank sheet of paper, a pencil, and a periodic table

• A textbook, a highlighter, and a periodic table

• A calculator, a ruler, and a periodic table

• A notebook, a pen, and a calculator

How many protons does chlorine have according to the periodic table?

• 7

• 35

• 17

• 18

In a Bohr model, how many electrons can the first energy level hold?

• 8

• 6

• 4

• 2

How many valence electrons does magnesium have?

• 2

• 6

• 12

• 8

What is the total number of electrons in a carbon atom?

• 6

• 8

• 4

• 12

What is the main difference between Bohr models and Lewis structures?

• Bohr models show only valence electrons, Lewis structures show all electrons

• Bohr models are used for metals, Lewis structures for non-metals

• Bohr models are 3D, Lewis structures are 2D

• Bohr models show all electrons, Lewis structures show only valence electrons

How many valence electrons does bromine have?

• 7

• 6

• 8

• 5

What does the group number on the periodic table indicate?

• The number of valence electrons

• The number of neutrons

• The number of energy shells

• The number of protons

What does the period number on the periodic table tell you?

• The number of protons

• The number of energy shells

• The atomic mass

• The number of valence electrons

Which of the following is NOT a 'cheat code' for using the periodic table?

• Mass number equals protons plus neutrons

• Atomic number equals the number of protons

• Group number equals the number of energy shells

• Period number equals the number of energy shells