The atomic number of the element unnilennium is :

Options

A. 109
B. 102
C. 119
D. 108

Explanation

To find the atomic number of the element unnilennium, we can break down the name based on the systematic nomenclature used for elements with atomic numbers greater than 100.

### Step-by-Step Solution:

1. **Understanding the Name**: The name "unnilennium" can be broken down into three parts:
- "un" corresponds to 1
- "nil" corresponds to 0
- "ennium" corresponds to 2 (as it is derived from the Latin word for ten, "decem", and is used for numbers in the tens place).

2. **Constructing the Atomic Number**: To find the atomic number, we combine these parts:
- The first part "un" gives us 1.
- The second part "nil" gives us 0.
- The third part "ennium" indicates that we are in the range of 10s, specifically the 2nd decade (which is 10-19).

3. **Calculating the Atomic Number**: Therefore, we can calculate the atomic number as follows:
- 1 (from "un") + 0 (from "nil") + 2 (from "ennium") = 102.

4. **Conclusion**: Thus, the atomic number of the element unnilennium is **102**.

### Final Answer:
The atomic number of the element unnilennium is **102**.