Binary Ionic Compounds 22-23

Front

What is a binary ionic compound?

Back

A binary ionic compound is a chemical compound composed of two different elements, typically consisting of a metal and a non-metal, that are held together by ionic bonds.

Front

What is the general formula for binary ionic compounds?

Back

The general formula for binary ionic compounds is AxBy, where A is the cation (positive ion) and B is the anion (negative ion), and x and y are the subscripts that balance the charges.

Front

How do you determine the formula of a binary ionic compound?

Back

To determine the formula, identify the charges of the cation and anion, then use subscripts to balance the total positive and negative charges.

Front

What is the charge of potassium (K) in ionic compounds?

Back

The charge of potassium (K) in ionic compounds is +1.

Front

What is the charge of phosphorus (P) in ionic compounds?

Back

The charge of phosphorus (P) in ionic compounds can vary, but in phosphide (P^3-), it is -3.

Front

What is the name of the compound K3P?

Back

The name of the compound K3P is potassium phosphide.

Front

What is the formula for magnesium oxide?

Back

The formula for magnesium oxide is MgO.

Front

What is the significance of subscripts in chemical formulas?

Back

Subscripts indicate the number of atoms of each element in a compound and are essential for representing the correct ratio of ions.

Front

What is the formula for calcium phosphide?

Back

The formula for calcium phosphide is Ca3P2.

Front

What is an incorrectly written ionic compound formula?

Back

An incorrectly written ionic compound formula is RbO, as rubidium (Rb) has a +1 charge and oxygen (O) has a -2 charge, requiring two rubidium ions to balance the charge.