Transition metals or d block elements.
Astatine is placed in group-17 in the Periodic Table. Its symbol is At.
The first periodic table was devised by Dmitri Mendeleev and published in 1869
Noble gases are found in the 18th group in the periodic table.
Fermium (Fm) is in Group 7 in the Periodic Table.
representative elements
A group in Periodic Table is the column of element in periodic table
The most reactive nonmetals are located in top most right section of the Periodic Table, excluding group 18 (has no reactivity).
Chlorine is in Group 17 of the Periodic Table.
A period on the periodic table is a row.This is the horizontal section of the periodic table.
A group in periodic table is the column of element in periodic table
Chlorine is in Group 17 of the Periodic Table.
Lead is in the group 14 of the Periodic Table.
Astatine is placed in group-17 in the Periodic Table. Its symbol is At.
Gold (Au) is a transition metal, thus is positioned in the d-block (middle portion) of the main section of periodic table in Period 6, Group 11 (or Group I b).
The first periodic table was devised by Dmitri Mendeleev and published in 1869
Noble gases are found in the 18th group in the periodic table.
A group is a column in the periodic table of elements.