Identify the last element from the fifth period.

Correct option is D

The correct answer is (d) Xenon.
• Xenon is a noble gas and is the last element of the fifth period in the periodic table.
• It has the atomic number 54.
• Xenon is colorless, dense, odorless, and chemically inert under most conditions.
• It is used in various applications such as light-emitting devices, including xenon arc lamps, and in medical imaging.
• The fifth period of the periodic table contains 18 elements, starting with Rubidium (Rb) and ending with Xenon (Xe).