The elements in the horizontal rows are called periods.
A period on the periodic table is a horizontal row that represents the number of electron shells an atom has. A series on the periodic table refers to a group of elements that share similar chemical properties, such as the lanthanide and actinide series.
There is no difference between "period table" and "periodic table" - they refer to the same thing. The periodic table is a tabular display of the chemical elements organized by atomic number, electron configuration, and recurring chemical properties.
Copper is located in period 4 of the periodic table.
No. Xenon is not the first period of the periodic table. It is placed in the 5th period of periodic table.
Helium is in the first period of the periodic table.
The second period at the bottom of the table is called the lanthanide series or the lanthanoid series. It consists of 14 elements with atomic numbers 57 to 70 and is located below the main body of the periodic table.
The first period is at the top of the table. It consists of hydrogen and helium. The bottom period is period 7.
Thorium is a member of the actinoids family, period 7 in the periodic table of Mendeleev. The half life of 232Th is 1,405.1010 years.
Argon is in the third period of the modern periodic table.
Oxygen is in Period 2 , Group 16 ( VI A) of periodic table
Caesium is a Period 6 element.
No , Iodine is placed in period-5 of the periodic table.