Write the name the liquid non-metal element.

Explanation

To answer the question "Write the name of the liquid non-metal element," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the name of a non-metal element that is in liquid form under normal conditions (room temperature and atmospheric pressure).

2. **Identify Non-Metal Elements**: Recall the periodic table and identify which elements are classified as non-metals. Non-metals include elements like hydrogen, carbon, nitrogen, oxygen, fluorine, phosphorus, sulfur, chlorine, selenium, bromine, and iodine.

3. **Determine State of Non-Metals**: Check the physical states of these non-metals at room temperature. Most non-metals are gases or solids at room temperature, except for one.

4. **Identify the Liquid Non-Metal**: Among the non-metals, bromine (Br) is the only element that is a liquid at room temperature. It is found in Group 17 of the periodic table, which is known as the halogens.

5. **Conclude the Answer**: Based on the identification, the answer to the question is "bromine."

### Final Answer:
The liquid non-metal element is **bromine**.

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