Periodic table period
Period 5
Period 5 is a horizontal row of the periodic table with 18 elements, from Rubidium (atomic number 37) to Xenon (atomic number 54). Every element in the row has 5 occupied electron shells. Period 5 mirrors period 4, filling the 5s, 4d and 5p subshells. It contains the second row of transition metals, including silver, and ends at xenon.
At a glance
- Elements
- 18
- Atomic numbers
- 37 to 54
- Blocks
- s-block, d-block, p-block
- Period
- 5
- Phase at STP
- solid (17), gas (1)
Shared properties
- Each member has 5 occupied electron shells
- Atomic radius generally decreases from left to right across the period
- Ionization energy and electronegativity generally increase across the period
- Character shifts from metallic on the left to nonmetallic on the right