Predict:
(a) whether the square-planar complex ion $\left[\mathrm{Cu}(\mathrm{py})_4\right]^{2+}$ is diamagnetic or paramagnetic

Evaluate each express ion if x=6.

$$2 x \div 6$$

Find the hydronium ion $\left[\mathrm{H}_3 \mathrm{O}^{+}\right]$concentration for the substance with the given p H. Wine, 3.4

Show what happens to the electrons of a neutral calcium atom (Ca) when it is changed into a calcium ion $\left(\mathrm{Ca}^{2+}\right)$.

Name each polyatomic ion.

(a) $\mathrm{BrO}^{-}$

(b) $\mathrm{BrO}_2^{-}$

(c) $\mathrm{BrO}_3^{-}$

(d) $\mathrm{BrO}_4^{-}$

What is the electron configuration for the ion $\mathrm{P}^{\mathrm{1}-}$? Explain how this configuration is different form the configuration for the neutral atom of phosphorus.

How many protons and electrons are present in each ion?
a. Ni$^{2+}$ b. Se$^{2–}$ c. Zn$^{2+}$ d. Fe$^{3+}$

How many electrons must an aluminum atom, Z=13, lose to attain a noble gas configuration? Write the symbol for the ion formed.

The ground state ionization energy for the one electron ion $X ^ { m +}$ is $4.72 \times 10 ^ { 4 } \text{ kJ}/ \mathrm { mol }.$ Identify X and m.

Superoxide ion is toxic to strict anaerobes because they lack a. catalase $\hspace{2.4cm}$ c. dismutase b. peroxidase $\hspace{2cm}$ d. oxidase

Write the charge and complete ground-state electron configuration of the monatomic ion most likely to be formed by each:
(a) $\mathrm{Cl}$

Write the charge and complete ground-state electron configuration of the monatomic ion most likely to be formed by each:
(c) $\mathrm{Ca}$

Classify the following as a monoatomic cation, monoatomic anion, polyatomic cation, or polyatomic anion.

Hydronium ion, $\mathrm{H}_3 \mathrm{O}^{+}$

Obtain a. the $K_b$ value for $\mathrm{NO}_2{ }^{-} ;$ b. the $K_a$ value for $\mathrm{C}_5 \mathrm{H}_5 \mathrm{NH}^{+}$(pyridinium ion).