Open Question
Sketch the three-dimensional shape of the following molecules: a. Methylamine, CH₃NH₂
5. Molecules and Compounds
Molecular Models
Struggling with Introduction to Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following molecular models represents the ammonia molecule, NH3?
A
B
C
D
Verified step by step guidance1
Identify the chemical formula for ammonia, which is NH₃. This indicates one nitrogen (N) atom and three hydrogen (H) atoms.
Understand that in molecular models, different colors often represent different elements. Typically, nitrogen is represented by a blue sphere, and hydrogen is represented by white spheres.
Examine each molecular model provided. Look for a model with one blue sphere connected to three white spheres, which would represent the NH₃ structure.
Consider the geometry of the ammonia molecule. Ammonia has a trigonal pyramidal shape due to the lone pair of electrons on the nitrogen atom, which affects the arrangement of the hydrogen atoms.
Compare the models to the known structure and geometry of NH₃ to determine which model accurately represents ammonia.
1:10mWatch next
Master Molecular Models Concept 1 with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Molecular Models practice set
Problem sets built by lead tutorsExpert video explanations