The numbers on the left side of the table are the period numbers and on the top are the group numbers.
Period Number: 2 Group Number: 18
Sulfur is in Group 16, Period 3.
Sodium (Na), element number 11.
Period, 3 (row)Group, 18 (column)
Chromium is the element in period 4 and group 6.
Platinum is in Group 10, , and Period 6.
Tells you where this element resides in the period table. tell you which group,,metallic , gas, or liquid.
Element Name: Arsenic. Chemical Symbol: As.
It is indium(In) which is in 5th period in group IIIA (or group 13).
You look in which periodical group they are (not in which period)
beryllium is denoted as Be, and is number 4, it is in group 2 and in period 2
Lutetium is a chemical element with the symbol Lu and atomic number of 71. It has a period of 6 and belongs in the Lanthanide group.