Which of the following is the symbol of the metal that occurs in liquid form at ordinary temperature?

Options

A. Na
B. Sn
C. Pb
D. Hg

Explanation

To solve the question "Which of the following is the symbol of the metal that occurs in liquid form at ordinary temperature?", we can follow these steps:

### Step 1: Identify the metals listed in the options.
We need to consider the metals mentioned in the question. The common metals that might be listed are Sodium (Na), Tin (Sn), Lead (Pb), and Mercury (Hg).

### Step 2: Determine the physical state of each metal at ordinary temperature.
- **Sodium (Na)**: This metal is solid at room temperature.
- **Tin (Sn)**: This metal is also solid at room temperature.
- **Lead (Pb)**: This metal is solid at room temperature.
- **Mercury (Hg)**: This metal is unique as it is the only metal that is liquid at room temperature.

### Step 3: Identify the symbol of the metal that is liquid at ordinary temperature.
From the analysis above, we can conclude that Mercury (Hg) is the only metal that exists in liquid form at ordinary temperature.

### Final Answer:
The symbol of the metal that occurs in liquid form at ordinary temperature is **Hg** (Mercury).

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