Describe the similarities and differences between ionic compounds and metals in terms of their physical and chemical characteristics.

Two physical properties of metals are ductility and malleability. Explain these properties based on what you know about the valence electrons of metal atoms .

Choose the term that best completes the second relationship. cow : horse ionic bond : (1) anion (2) chemical bond (3) cation (4) covalent bond

How do the motions of sodium ions and chloride ions in molten sodium chloride differ from the motions of these ions in sodium chloride crystals?

When a bromine atom gains an electron.

A) a bromide ion is formed.

B) the ion formed has a $1-$ charge.

C) the ion formed is an anion.

D) all the above are correct.

Is it accurate to describe sodium chloride (NaCI) as consisting of individual particles, each made up of one Na$^+$ cation and one CI$^-$ anion? Explain your answer.

Why are many elements more stable as ions than they are as atoms?

What is the relationship between the number of electrons in the valence shells in an electron configuration diagram for an atom and the number of dots in the corresponding electron dot structure?

The properties of all samples of brass are not identical. Explain.

The spheres below represent the relative diameters of atoms or ions. Rearrange the sequences in $\mathbf{a}$. and b. so the relative sizes of the particles correspond to the increasing size of the particles in the illustration.

sodium atom, sodium ion, potassium atom, potassium ion

Explain how hexagonal close-packed, face-centered cubic, and body-centered cubic unit cells are different from one another.

Metallic cobalt crystallizes in a hexagonal close-packed structure. How many neighbors will a cobalt atom have?

The lettered choices below refer to the questions given below. A lettered choice may be used once, more than once, or not at all. A) gains two electrons B) loses two electrons C) gains three electrons D) loses one electron E) gains one electron

Which choice describes what likely happens as each of the following elements forms an ion?

Magnesium

Write complete electron configurations for the following atoms and ions. For each group, comment on the results. Ar, K$^+$, Ca$^{2+}$