Chemistry - Valence Structure
What is the oxidation number for Ba?
+2
What is the oxidation number for Cl?
-1
In the example in the lesson, 0.10 mole of sodium chloride or magnesium chloride or aluminum chloride was added to one liter of water. How many moles of each chloride are in one milliliter of the respective solutions?Hint: There is 0.10 mole per liter. Recall how many milliliters are in a liter and divide 0.10 by that number. (Remember to use the proper number of significant figures.)
0.00010 moles/mL
Assume that you measured exactly 2.0 mL of the sodium chloride solution into a small test tube. How many moles of sodium chloride are in the tube?
0.00020 moles
Now assume you measure out exactly 2.0 mL of aluminum chloride into a third test tube. How many moles of aluminum chloride are in the tube?
0.00020 moles
How many valence electrons does calcium have?
2
Balance the following equation. ___ AlCl 3 + ___ AgNO 3 → ___ AgCl + ___ Al(NO 3 ) 3
Blank 3 3 blank
An ion is an atom with a net electrical charge due to ______.
Both of the above
Balance the following equation. ___ MgCl 2 + ____ AgNO 3 → ____ AgCl + ____ Mg(NO 3 ) 2
blank 2 2 blank
How could Cl change to gain stability?
gain 1 electron
How would Mg change to gain a noble gas structure?
lose 2 electrons
What would barium do to obtain a noble gas structure?
lose 2 electrons
How would B change to gain stability?
lose 3 electrons