8. Quiz

What do Lewis structures show?

• The orbits and nucleus of an atom
• The differences in isotopes
• Plum pudding
• Bonding and lone pair electrons

How many valence electrons does a nitrogen atom have?

• 2
• 3
• 5
• 8

Tags

NGSS.HS-PS1-1

Which is the correct Lewis structure for HCl?

• A
• B
• C
• D

What is the correct Lewis structure for CI4

• A
• B
• C
• D

Tags

NGSS.HS-PS1-3

VSEPR theory is a model for predicting_______.

• the strength of metallic bonds
• the shape of molecules
• electron affinity
• ionization energy

Use VSEPR theory to predict the shape of the hydrogen sulfide molecule, H2S.

• tetrahedral
• linear
• angular
• octahedral

According to VSEPR theory, the structure of the ammonia molecule, NH3, is_____.

• linear
• trigonal pyramidal
• bent
• tetrahedral

Which substance has three covalent bonds?

• H2O
• CH2Cl2
• NH3
• CCl4

What is the H-C-H angle in methane, CH4?

• 180°
• 120°
• 109.5°
• 90°

Based on the Lewis dot structures, which of the following contains a nonbonding (lone) pair of electrons?

• H2
• NH3
• CH4
• BH3