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Zinc has a charge of \( +2 \), and oxygen has a charge of \( -2 \). Which is the chemical formula for zinc oxide?

A. \( ZnO \)

B. \( Zn_2O \)

C. \( OZn \)

D. [tex]\( OZn_2 \)[/tex]

Sagot :

To determine the correct chemical formula for zinc oxide, follow these steps:

1. Identify the Charges:
Zinc (Zn) has a charge of +2, represented as \( Zn^{2+} \).
Oxygen (O) has a charge of -2, represented as \( O^{2-} \).

2. Balance the Charges:
To create a neutral compound, the total positive charge must equal the total negative charge. Since zinc has a charge of +2 and oxygen has a charge of -2, a 1:1 ratio of zinc to oxygen will balance the charges. This results in a neutral compound because \( Zn^{2+} + O^{2-} = 0 \).

3. Write the Chemical Formula:
With one zinc ion and one oxygen ion needed to balance the charges, the formula for zinc oxide is \( \text{ZnO} \).

4. Choose from the Given Options:
The provided options are:
1. \( ZnO \)
2. \( Zn_2O \)
3. \( OZn \)
4. \( OZn_2 \)

Based on our balanced formula, the correct chemical formula is \( \text{ZnO} \).

Therefore, the correct chemical formula for zinc oxide in the given options is \( \text{ZnO} \), which corresponds to the first option.

So, the answer is (1) [tex]\( \text{ZnO} \)[/tex].