Atomic Structure and Valence Electrons

The video tutorial covers the construction of Bohr models and Lewis dot structures. It begins with an explanation of atomic structure, detailing protons, neutrons, and electrons. The tutorial then guides viewers through creating a Bohr model for magnesium, identifying the element based on its atomic number. It transitions to Lewis dot structures, explaining how to convert from a Bohr model and find valence electrons using group numbers. The video concludes with a demonstration of drawing a Lewis dot structure for neon and notes the limitations of the method for certain elements.

What charge do protons carry?

• Neutral

• Negative

• Variable

• Positive

Where are neutrons located within an atom?

• In the electron cloud

• In the nucleus

• In the orbitals

• In the outer shell

What is the maximum number of electrons in the first orbital of a Bohr model?

• 8

• 6

• 4

• 2

How many electrons are in the second orbital of a Bohr model?

• 8

• 2

• 4

• 6

What element is represented by a Bohr model with 12 protons?

• Carbon

• Oxygen

• Magnesium

• Neon

What are valence electrons?

• Protons in the nucleus

• Neutrons in the nucleus

• Electrons in the outermost shell

• Electrons in the innermost shell

How can you determine the number of valence electrons using the periodic table?

• By period number

• By atomic mass

• By atomic number

• By group number

How many valence electrons does carbon have?

• 8

• 2

• 4

• 6

Which group does neon belong to, and how many valence electrons does it have?

• Group 8A, 8 electrons

• Group 4A, 4 electrons

• Group 1A, 1 electron

• Group 6A, 6 electrons

Why doesn't the shortcut for finding valence electrons work for transition metals?

• They have no valence electrons

• They have variable valence electrons

• They are not in any group

• They have a fixed number of electrons