Please I need help.
Many,but not all, compounds are made up of positive and negative ions. Three positive ions A^+, B^2+ and C^3+ could form a total of six different compounds with negative ions, Y^2- and Z^3-.
Derive the formulae for six compounds and write them in the table.
A2Y
A3Z
BY
B3Z2
CZ
C2Y3
check those.
To derive the formulae for the six compounds and write them in a table, we need to consider the charges of the positive ions (A^+, B^2+, and C^3+) and the negative ions (Y^2- and Z^3-).
When combining a positive and negative ion to form a compound, the overall charge of the compound should be neutral. This means that the sum of the positive charges should equal the sum of the negative charges.
Let's start by pairing the positive ions with the negative ions, considering the charge balance:
1. A^+ with Y^2-
The positive charge of A^+ is +1, and the negative charge of Y^2- is -2. To balance the charges, we need two A^+ ions. Therefore, the formula for this compound would be A2Y.
2. A^+ with Z^3-
The positive charge of A^+ is +1, and the negative charge of Z^3- is -3. To balance the charges, we need three A^+ ions. Therefore, the formula for this compound would be A3Z.
3. B^2+ with Y^2-
The positive charge of B^2+ is +2, and the negative charge of Y^2- is -2. The charges are already balanced, so we only need one of each ion. Therefore, the formula for this compound would be BY.
4. B^2+ with Z^3-
The positive charge of B^2+ is +2, and the negative charge of Z^3- is -3. To balance the charges, we need one B^2+ ion and one Z^3- ion. Therefore, the formula for this compound would be BZ.
5. C^3+ with Y^2-
The positive charge of C^3+ is +3, and the negative charge of Y^2- is -2. To balance the charges, we need two C^3+ ions. Therefore, the formula for this compound would be C2Y.
6. C^3+ with Z^3-
The positive charge of C^3+ is +3, and the negative charge of Z^3- is -3. The charges are already balanced, so we only need one of each ion. Therefore, the formula for this compound would be CZ.
Now, we can write the six compounds and their formulae in a table:
Compound | Formula
------------------------------------
A2Y | A2Y
A3Z | A3Z
BY | BY
BZ | BZ
C2Y | C2Y
CZ | CZ
I hope this helps! If you have any further questions, feel free to ask.