Write the formulas for the following compounds sodium...

Write the formulas for the following compounds: sodium nitrate ___________ potassium acetate ___________ aluminum sulfate ___________ lithium chlorate ___________ magnesium nitrate ___________ ammonium acetate ___________ potassium dichromate ___________ sodium sulfate ___________ ammonium sulfate ___________ potassium nitrate ___________ Write the formula for these transition metal compounds: Zinc (II) chloride Chromium (VI) oxide Iron (III) sulfide Write the names of these two ionic compounds: a. MgCl2 b. Li3N Write the ionic formula for these compounds a. Potassium chloride b. Lithium sulfide c. Magnesium phosphide Use Lewis dot structures to show the covalent bonding in the following pairs of elements. 1) nitrogen triiodide (NI3) 2) carbon tetrabromide (CBr4) 3) dihydrogen monoxide (H2O) Which prefix is never used for the first element of the compound? Write the name of each of these covalent compounds: a. N2O b. NO2 c. N2O4 d. N2O3 e. NO Write the formula of each of these covalent compounds: a. Disulfur dichloride b. Sulfur dioxide c. Disulfur trioxide d. Disulfur monoxide e. Sulfur trioxide

Transcript

00:01 For this question, we're going to go through the names and formulas for several ionic compounds, as well as covalent compounds, and talk about some of the rules associated with naming and formula writing for those compounds.

00:14 So starting off, we've got a group of compounds that we're going to write the formulas for, and these are all ionic compounds.

00:22 So first we have sodium nitrate.

00:25 Its formula is n -a -n -o -3.

00:30 Then we have potassium acetate, which is going to be k -c -2 -h -3 -o -2.

00:46 Then we have aluminum sulfate, which will be al2.

00:52 Our sulfate will go in parentheses, so al2, s -o -4, and then three.

00:59 Then we have lithium chromate.

01:01 This is, excuse me, lithium chlorate, which is l -i -c -l -o -3.

01:08 Next is magnesium nitrate, which will be mg, parentheses, n -o -3, parentheses, 2.

01:18 Then we have ammonium acetate, which will be nh4, c2h -3 -o -2.

01:28 Next, we have potassium dichromate, which is k2, cr2, o7.

01:38 Then we have sodium sulfate, which is n -a -2 -s -o -4, then we have ammonium sulfate, which will be parentheses nh4, parentheses 2, so4, and then we have potassium nitrate, which is k -n -o -3.

02:03 All of these particular compounds contain common metals that are all going to have just one single charge to them, so there's not anything special that we have to do or consider with them.

02:13 The next set of names that we have are compounds that contain transition metals that either have very specific charges that are a little unpredictable or they have multiple charges and we have to consider that when writing the formula.

02:27 So first we have zinc chloride.

02:30 Zinc is always plus two.

02:32 So it's going to be zn, cl2.

02:38 Next we have chromium oxide, chromium 4 oxide, 6 oxide, excuse me.

02:46 So initially when we write this, just in the normal way that we write formulas, it would be cr206.

02:54 However, this is an ionic compound, so it needs to be reduced.

02:58 And so we're going to write it as cro3.

03:06 Next, we've got iron 3 sulfide.

03:14 So this will be f .e .2 .s3.

03:18 And those are some examples of our transition metals.

03:23 Now we're going to move into some naming of ionic compounds.

03:30 So we have mgcl2.