Writethe nameand atomic number of ninth element of the3d-series.

Write the nameand atomic number of fourth element of the3d-series.

Write the name and atomic number of the last element of 3d-series.

Indicate the atomic number of elements of period 3 of modern periodic table: elements forming positive ions

Indicate the atomic number of elements of period 3 of modern periodic table:element forming negative ions.

Write the electronic configuration of the element with atomic number 17. Indicate the valency of the element.

What is the atomic number of elements whose outermost electrons are represented by 3s ^(1)

What is the atomic number of elements whose outermost electrons are represented by 2p ^(3)

What is the atomic number of elements whose outermost electrons are represented by 3p ^(5)

Discuss the general properties of transition elements with reference to elements of 3d- series.

An element has 2 electrons in the M shell. What is the atomic number of the element ?