An element whose IUPAC name is ununtrium (Uut) belongs to:

Options

A. s-block element
B. p-block element
C. d-block element
D. transition element

Explanation

To determine the block of the element whose IUPAC name is ununtrium (Uut), we will follow these steps:

### Step 1: Identify the Atomic Number
Ununtrium (Uut) corresponds to the atomic number 113. The name "ununtrium" is derived from the Latin roots where "un" stands for one and "trium" stands for three, indicating the number 113.

**Hint:** The IUPAC naming convention uses Latin roots to represent the atomic number.

### Step 2: Determine the Period
Since ununtrium has an atomic number of 113, it is located in the seventh period of the periodic table. The seventh period contains elements with atomic numbers from 87 (Francium) to 118 (Oganesson).

**Hint:** The period number corresponds to the highest principal quantum number (n) of the electrons in the element.

### Step 3: Identify the Block
To determine the block of the element, we need to look at the electron configuration of ununtrium. The elements in the periodic table are divided into s, p, d, and f blocks based on their electron configurations:

- **s-block:** Groups 1 and 2 (and Helium)
- **p-block:** Groups 13 to 18
- **d-block:** Transition metals (Groups 3 to 12)
- **f-block:** Lanthanides and actinides

The atomic number 113 falls into the p-block because it is in the group corresponding to the filling of the p orbitals.

**Hint:** The block of an element can be determined by its group number and the type of orbital being filled.

### Conclusion
Thus, ununtrium (Uut) belongs to the **p-block** of the periodic table.

**Final Answer:** Ununtrium (Uut) belongs to the p-block element.