Technetium (43), Promethium (61), and all the transuranic elements are synthetic.
Elements in the same family (group) on the periodic table have the same number of valence electrons and hence they have similar properties and reactivities.
the periodic table has all the elments
The noble gases viz., helium, neon, argon, krypton, xenon, radon
A group in Periodic Table is the column of element in periodic table
AnswerThere are 18 groups across the periodic table, and they are numbered 1 through 18. Group 1:Alkali Metals*Group 2:Alkaline Earth MetalsGroups 3-12: Transitional MetalsGroups 13&14: UnnamedGroup 15:Pnictogens or Pnicogens)Group 16: ChalcogensGroup 17: HalogensGroup 18: Noble Gases*excluding hydrogen (hydrogen is in its own group)
Lead is in the group 14 of the Periodic Table.
Chlorine is in Group 17 of the Periodic Table.
Astatine is placed in group-17 in the Periodic Table. Its symbol is At.
Mendelevium has the atomic number 101 (in the Actinides)
A "family" of elements means the vertical columns in the periodic table. If you look above the periodic table, there will be numbers for each row, numbered from 1 to 18. Each "family" is a column.
Lead is in the group 14 of the Periodic Table.
There is no group p on the periodic table.