Sodium is in group 1 with an atomic number of 11......
Rhodium data: - group 9 - period 5 - atomic number 45
Magnesium's group number is 2. Its period number is 3.
Group number 12, period number 4 Transition metal
Period Number: 2 Group Number: 18
The numbers on the left side of the table are the period numbers and on the top are the group numbers.
Sodium is a metal element. Atomic mass of it is 22.99.
Chlorine belongs to group 17 of period 3.It belongs to Halogens group with atomic number 17.
Polonium is located in Group 16 (VIA) and in Period 6.
Boron has the period number 2 in the periodic table.
Zirconium(Zr) has an atomic number of 40. It is in Group 4 and Period 5.
Oxygen is in group 16, period 2
Xenon is in group 18 (also known as the noble gases) and period 5 on the periodic table.