Predict the electron pair geometry, the molecular shape, and the bond angle for a phosphine molecule, PH$_{3}$, using VSEPR theory

Which element in the periodic table has the largest ionization energy? Which has the smallest?

Arrange the following atoms in order of decreasing radius: C, Li, Be.

Draw the electron configuration for a neutral atom of vanadium.

Draw the electron configuration for the neutral atom of vanadium.

Draw the electron configuration for a neutral atom of vanadium.

Write balanced nuclear equations for the following:

$\beta +$ emission by $\frac { 23 } { 12 }$ ${ Mg }$

Write balanced nuclear equation for beta emission by this isotope.

$^{28}_{12}$Mg

Write the equation for the dissolution of each of the following ionic compounds in water. a. KI, b.

$$\mathrm { NaNO } _ { 3 }$$

, c.

$$\mathrm { MgCl } _ { 2 }$$

, d.

$$\mathrm { Na } _ { 2 } \mathrm { SO } _ { 4 }$$

Sodium reacts with oxygen to produce sodium oxide.

$$4 \mathrm{Na}(s)+\mathrm{O}_2(g) \longrightarrow 2 \mathrm{Na}_2 \mathrm{O}(s)$$

a. How many grams of $\mathrm{Na}_2 \mathrm{O}$ are produced when $57.5 \mathrm{~g}$ of Na reacts? b. If you have $18.0 \mathrm{~g}$ of $\mathrm{Na}$, how many grams of $\mathrm{O}_2$ are required for reaction? c. How many grams of $\mathrm{O}_2$ are needed in a reaction that produces $75.0 \mathrm{~g}$ of $\mathrm{Na}_2 \mathrm{O}$ ?

Sodium reacts with oxygen to produce sodium oxide.

$$4 \mathrm{Na}(s)+\mathrm{O}_2(g) \longrightarrow 2 \mathrm{Na}_2 \mathrm{O}(s)$$

How many grams of $\mathrm{Na}_2 \mathrm{O}$ are produced when $57.5 \mathrm{~g}$ of $\mathrm{Na}$ reacts?

bond order;

Predict the electron pair geometry, the molecular shape, and the bond angle for a nitrogen triiodide molecule, NI$_{3}$, using VSEPR theory

Element 107, now named bohrium, was synthesized by German researchers by colliding bismuth-209 with chromium-54 to form a bohrium isotope and one neutron. Write the nuclear equation to represent this reaction.