Xenon and krypton is used in electric bulbs to slow down the sublimation of tungsten.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Statement:** The question states that xenon and krypton are used in electric bulbs to slow down the sublimation of tungsten. We need to determine if this statement is correct or incorrect.

2. **Identifying Tungsten's Role:** Tungsten is used as a filament in electric bulbs. It is known for its high melting point and ability to conduct electricity, making it ideal for this purpose.

3. **Explaining Sublimation:** Sublimation is the process where a solid turns directly into a gas without passing through the liquid phase. Tungsten can sublimate at high temperatures, specifically around 550 degrees Celsius.

4. **Role of Noble Gases:** To prevent tungsten from sublimating too quickly, noble gases like xenon and krypton are filled in the bulb. These gases help to create an inert atmosphere, which slows down the sublimation process of tungsten.

5. **Chemical Inertness of Noble Gases:** Noble gases are chemically inert, meaning they do not react with tungsten or other materials in the bulb. This property makes them suitable for use in light bulbs to prolong the life of the tungsten filament.

6. **Conclusion:** Since the use of xenon and krypton does indeed help in slowing down the sublimation of tungsten in electric bulbs, the statement provided in the question is correct.

**Final Answer:** The statement is true.

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