Which of the following element does not occur in liquid form

Options

A. Hg
B. Li
C. Ga
D. Br

Explanation

To determine which of the following elements does not occur in liquid form, we need to analyze the states of matter of each element mentioned. Here’s a step-by-step solution:

### Step 1: Identify the elements
Let's list the elements mentioned in the question:
1. Mercury (Hg)
2. Lithium (Li)
3. Gallium (Ga)
4. Bromine (Br)

### Step 2: Determine the state of each element at room temperature
- **Mercury (Hg)**: Mercury is the only metal that is liquid at room temperature.
- **Lithium (Li)**: Lithium is an alkali metal and is solid at room temperature.
- **Gallium (Ga)**: Gallium is a metal that is solid at room temperature but can melt just above room temperature (around 29.76 °C), so it can be found in a liquid state when heated slightly.
- **Bromine (Br)**: Bromine is a non-metal and is liquid at room temperature.

### Step 3: Conclusion
From the analysis:
- Mercury (Hg) is liquid.
- Lithium (Li) is solid.
- Gallium (Ga) can be liquid but is primarily solid at room temperature.
- Bromine (Br) is liquid.

The element that does not occur in liquid form at room temperature is **Lithium (Li)**.

### Final Answer
**Lithium (Li) does not occur in liquid form.**

---