Find whether `alpha-` deacy or any of the `beta-` decay are allowed for `._(89)^(226)Ac`.

Explanation

To determine whether alpha decay or any beta decay is allowed for the isotope \( _{89}^{226}\text{Ac} \) (Actinium-226), we need to analyze the decay processes and calculate the disintegration energy \( Q \) for each decay mode. The decay is allowed if \( Q > 0 \).

### Step 1: Check for Alpha Decay

1. **Identify the decay reaction**:
\[ _{89}^{226}\text{Ac} \rightarrow _{87}^{222}\text{Fr} + _{2}^{4}\text{He} \]
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