Transuranic elements begin with

Options

A. Np
B. Cm
C. Pu
D. U

Answer

To determine which element is the first transuranic element, we can follow these steps:

### Step 1: Understand Transuranic Elements
Transuranic elements are defined as those elements that have an atomic number greater than 92. The atomic number 92 corresponds to Uranium (U).

**Hint:** Remember that transuranic elements are those that come after Uranium in the periodic table.

### Step 2: Identify the Elements
The elements that follow Uranium in the periodic table are Neptunium (Np, atomic number 93), Plutonium (Pu, atomic number 94), Curium (Cf, atomic number 96), and so on.

**Hint:** List the elements in order of their atomic numbers to see which one comes first after Uranium.

### Step 3: Determine the First Transuranic Element
Since Neptunium (Np) has the atomic number 93, it is the first element that comes after Uranium (U, atomic number 92).

**Hint:** The first transuranic element is always the one with the atomic number immediately following 92.

### Step 4: Conclusion
Therefore, the first transuranic element is Neptunium (Np).

**Final Answer:** Transuranic elements begin with Neptunium (Np).

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