A period is a horizontal row.
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.
Argon is in the third period of the modern periodic table.
Oxygen is in Period 2 , Group 16 ( VI A) of periodic table
Ir refers to iridium element that is placed in group-9 and period-6 in the modern periodic table.
Caesium is a Period 6 element.
No , Iodine is placed in period-5 of the periodic table.
Sulfur (S, element number 16) is on the third period of the periodic table.
A period on the periodic table is a row.This is the horizontal section of the periodic table.
Silver is in the period 5 and group 11 of the periodic table.
period