AP chem semester one

Formal charge

# of valence electrons - ( # dots + # lines)

effective nuclear charge

the net positive charge experienced by valence electrons

The diagram above represents four cations, all shown to the same scale. Which cation would be predicted by Coulomb's law to have the strongest ion-dipole attraction to water, and why?

Mg2+ because it has the largest charge to size ratio

Why do gases deviate from ideal behavior?

Molecules have a larger more polarizable electron cloud

A student measures the mass of a sample of a metallic element, . Then the student heats the sample in air, where it completely reacts to form the compound . The student measures the mass of the compound that was formed. Which of the following questions can be answered from the results of the experiment?

What is the melting point of M

Partial charges on water

oxygen is partially negative and hydrogen is partially positive