Question

5) Xenon and Krypton are used in electric bulbs to slow down the sublimation of tungsten.

• A. True
• B. False

Answer 1

The correct option is A True

• Xenon and Krypton are noble gases present in group 18 of the periodic table.
• Tungsten is an alloy which is used as a filament in bulb. It is sublimely and coverts into gaseous state directly from solid state at $550°\mathrm{C}$.
• Inert gases like krypton and xenon are used to slow down the sublimation process of tungsten because they are inert and usually do not react with other chemical species.

Hence the above statement is True.