Lewis Dot Structures

Molecular Structures & Electronegativity

Good Things!

Multiple Choice

What makes something radioactive?

• elements with an atomic number above 81
• an unstable nucleus
• contaminated sewage
• It decays over time

Multiple Choice

Which type of radioactive decay is occurring in this equation? 

• Alpha decay
• beta decay
• gamma decay
• positron emission

Multiple Choice

How many neutrons would Fe-56 have?

• 56
• 26
• 30
• 33

Multiple Choice

• 2
• 3
• 5

Multiple Choice

• 2
• 8
• 3
• 13

The further "right" an element is, the more electronegative is.

Multiple Choice

What is the correct Lewis Dot Structure for ammonia NH3

Multiple Choice

Warm Up #1: Which atom has 4 neutrons?

• Li-6

• Li-7

• Li-8

• they have the same # of neutrons

Multiple Choice

Warm Up #2: How many protons does this isotope of titanium have?

• 48

• 22

• 26

• 70

Multiple Choice

How many total valence electrons are participating in bonding in the molecule above?

• 8

• 4

• 2

• 3

Multiple Choice

Which is the correct molecular structure for carbon dioxide?

Multiple Choice

What is the correct structure for BF₃?

• Option A.
• Option B. 
• Option C.
• Option D.

VSEPR Models for Molecules

What are the normal geometric structures for molecules?

H.C.3A.3 Analyze and interpret data to predict the type of bonding (ionic or covalent) and the shape of simple compounds by using the Lewis dot structures and oxidation numbers.

Multiple Choice

Who could this molecule be?

• CH₄
• CO₂
• PCl₅
• BF₃

Multiple Choice

What molecule could this be? 

• H₂O
• CCl₄
• PCl₅
• NaCl

Multiple Choice

What molecule could this be? 

• BF₃
• CH₄
• H₂O
• CO₂

Multiple Choice

Which molecule would have this molecular geometry?

• BF₃
• CH₄
• PCl₅
• CO₂