When the reaction, `Pb(NO_3)_2 to PbO + NO_2 + O_2` is balanced, the coefficients of `Pb(NO_3)_2, PbO and NO_2` are ______,________and ________ respectively.

Options

A. 2, 2 and 2
B. 2, 4 and 4
C. 4, 2 and 4
D. 2, 2 and 4

Explanation

To balance the reaction \( Pb(NO_3)_2 \rightarrow PbO + NO_2 + O_2 \), we will follow these steps:

### Step 1: Write the unbalanced equation
The unbalanced equation is:
\[ Pb(NO_3)_2 \rightarrow PbO + NO_2 + O_2 \]

### Step 2: Count the number of atoms of each element on both sides
- **Reactants:**
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