Draw a Lewis structure for each of the following molecules or ions. Describe the electron-pair geometry and the molecular geometry around the central atom.\

$$NH _2 Cl$$

What feature of a Lewis structure can be used to tell if a molecule’s (or ion’s) electron-pair geometry and molecular structure will be identical?

Draw a Lewis structure for each of the following molecules or ions. Describe the electron-pair geometry and the molecular geometry around the central atom.\

$$\mathrm{ClF}_3$$

Draw a Lewis structure for each of the following molecules or ions. Describe the electron-pair geometry and the molecular geometry around the central atom.\

$$\mathrm{SCN}^{-}$$

Draw a Lewis structure for each of the following molecules or ions. Describe the electron-pair geometry and the molecular geometry around the central atom.\

$$CF _2-$$

Draw a Lewis structure for each of the following molecules or ions. Describe the electron-pair geometry and the molecular geometry around the central atom.\

$$\mathrm{ClF}_{\mathrm{s}}$$

What feature of a Lewis structure can be used to tell if a molecule's (or ion's) electron-pair geometry and molecular structure will be identical?

Draw a Lewis structure for each of the following molecules or ions. Describe the electron-pair geometry and the molecular geometry around the central atom.\

$$\mathrm{CS}_2$$

Draw a Lewis structure for each of the following molecules or ions. Describe the electron-pair geometry and the molecular geometry around the central atom.\

$$SiF _0{ }^{2-}$$

Draw a Lewis structure for each of the following molecules or ions. Describe the electron-pair geometry and the molecular geometry around the central atom.\

$$\mathrm{SF}_4$$

Draw a Lewis structure for each of the following molecules or ions. Describe the electron-pair geometry and the molecular geometry around the central atom.
HOF

Draw the Lewis electron dot structure for XeO$_3$F$_2$. What is its electron-pair geometry and its molecular geometry?

Use the bond energy to calculate an approximate value of $\Delta H$ for the following reaction. Which is the more stable form of $\mathrm{FNO}_2$ ?

Of the elements magnesium, calcium, and barium, which forms the ion with the largest radius? The smallest? What periodic trend explains this?