Question

Name the first and the last member of the 3d series

Answer 1

Scandium is a chemical element with symbol Sc and atomic number 21 and it is the first member of 3d series.

Actinium (Symbol Ac 7 atomic number 89) is a radioactive chemical element and it is the last member of 3d series.

Answer 2

Scandium is the first member of the 3d series.

Actinium is the last member of the 3d series.