AP Chem
The particle-level diagram above represents the structure of solid . Although the molar mass of is greater . Which of the following representations of the than that of structure of , the density of is actually less than that of best helps to explain this phenomenon?
A
Which of the following diagrams best depicts an alloy of Ni and B
A
Which of the following can be inferred from the diagram above that shows the dependence of potential energy on the internuclear distance between two atoms?
The atoms form a bond with a bond of 75 pm
Which of the following Lewis electron-dot diagrams represents the molecule that contains the smallest bond angle?
B. NF3
Has a central atom with less than an octet of electrons
BH3
Which of the following complete Lewis diagrams represents a molecule containing a bond angle that is closest to 120*?
D
Which of the following correctly indicates whether the solid represented by the particulate model shown above conducts electricity and explains why or why not?
It does not conduct electricity because its ions cannot move freely within the solid.
Which of the following compounds contains both ionic and covalent bonds?
NH4Cl
The molecule that has trigonal pyramidal geometry
PH3
For which of the following molecules are resonance structures necessary to describe the bonding satisfactorily?
SO2
Is a polar molecule
SO2
Is best represented by two or more resonance forms
SO2
The potential energy of a system of two atoms as a function of their internuclear distance is shown in the diagram above. Which of the following is true regarding the forces between the atoms when their internuclear distance is x?
The attractive and repulsive forces are balanced, so the atoms will maintain an average internuclear distance x.
Which of the following scientific claims about the bond in the molecular compound HF is most likely to be true?
The bond is highly polar
Which of the following claims about the compound that forms from C and Se is most likely to be true?
The carbon to selenium bond is nonpolar covalent
The geometry of the SO3 molecule is best described as
Trigonal planar
