Ch.11 - Liquids, Solids & Intermolecular ForcesWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Boiling points of the covalent hydrides of the elements in groups 4A-7A as a function of molecular weight.Why is the boiling point of SnH4 higher than that of CH4?

Problem

The x-axis is molecular weight in atomic mass units, ranging from 0 to 150 with intervals of 25. The y-axis is boiling point in kelvin, ranging from 100 to 400 with intervals of 50. Elements from groups 4A to 7A are plotted. At a given molecular weight, group 4A molecules have a lower boiling point than the other groups, and group 6A has the highest.  Groups 5A and 7A are intermediate and cross each other. The lowest molecular weight molecule is much higher in groups 5A, 6A, and 7A, compared to the much lower group 4A.
Boiling points of the covalent hydrides of the elements in groups 4A-7A as a function of molecular weight.

Why is the boiling point of SnH4 higher than that of CH4?