The formula of barium sulphate is

Options

A. `Ba_2SO_4`
B. `BaSO_4`
C. `Ba(SO_4)_2`
D. `Ba_2(SO_4)_3`

Explanation

To find the formula of barium sulfate, we can follow these steps:

### Step 1: Identify the elements in barium sulfate
Barium sulfate is composed of two elements: barium and sulfate.

**Hint:** Look for the names of the elements in the compound to identify what you need to work with.

### Step 2: Write the chemical symbols for the elements
The chemical symbol for barium is **Ba**, and the sulfate ion is represented as **SO₄**.

**Hint:** Remember that each element has a unique symbol, often derived from its name.

### Step 3: Determine the charges of the ions
Barium (Ba) typically has a charge of **+2**, and the sulfate ion (SO₄) has a charge of **-2**.

**Hint:** Knowing the common charges of ions can help you balance the formula correctly.

### Step 4: Balance the charges
Since barium has a +2 charge and sulfate has a -2 charge, they balance each other out. This means that one barium ion will combine with one sulfate ion.

**Hint:** When combining ions, ensure that the total positive charge equals the total negative charge.

### Step 5: Write the formula
The formula for barium sulfate can be written as **BaSO₄**. There is no need for subscripts or parentheses in this case since the charges are balanced with one of each ion.

**Hint:** Always simplify the formula to its lowest terms when possible.

### Final Answer
The formula of barium sulfate is **BaSO₄**.

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