To which radioative series does `""_(89)^(227)Ac` belong?

Explanation

To determine the radioactive series to which the isotope \( _{89}^{227}Ac \) (Actinium-227) belongs, we can follow these steps:

### Step 1: Identify the Element
The element with atomic number 89 is Actinium (Ac).

### Step 2: Understand Radioactive Series
Radioactive elements can be classified into different series based on their decay processes. The three main radioactive series are:
1. **Uranium Series**: Begins with \( _{92}^{238}U \)
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