STATEMENT-1: U can show oxidation state +6
STATEMENT-2: Uranium is a radioactive element
STATEMENT-3: Uranium is lanthanoid

Options

A. TTF
B. TFF
C. TTT
D. FTF

Answer

To analyze the statements regarding uranium, we will evaluate each statement one by one.

### Step 1: Evaluate Statement 1
**Statement 1**: Uranium can show oxidation state +6.

- **Explanation**: Uranium (U) has an atomic number of 92. It belongs to the actinoid series (elements with atomic numbers from 89 to 103). Actinoids can exhibit multiple oxidation states due to the involvement of f-orbitals in bonding. Uranium can indeed show a +6 oxidation state, which is commonly found in compounds like uranium hexafluoride (UF6) and uranyl ion (UO2^2+).

### Step 2: Evaluate Statement 2
**Statement 2**: Uranium is a radioactive element.

- **Explanation**: Uranium is well-known for its radioactive properties. It has isotopes such as U-235 and U-238, which are used in nuclear reactors and weapons. The presence of these isotopes confirms that uranium is indeed a radioactive element.

### Step 3: Evaluate Statement 3
**Statement 3**: Uranium is a lanthanoid.

- **Explanation**: This statement is incorrect. Uranium is not a lanthanoid; it is an actinoid. The lanthanoids are the 15 elements from lanthanum (La, atomic number 57) to lutetium (Lu, atomic number 71). Uranium, with an atomic number of 92, is part of the actinide series, which follows the lanthanides in the periodic table.

### Conclusion
- **Statement 1**: True (Uranium can show oxidation state +6)
- **Statement 2**: True (Uranium is a radioactive element)
- **Statement 3**: False (Uranium is not a lanthanoid)

### Final Answer
- Statement 1 and Statement 2 are true, while Statement 3 is false.

---