If so, which will be the subshel from which iron loses the third electron?

The element X in group 17 has 3 shells. If so: What will be the chemical formula of the compound formed if the element X reacts with element Y of the third period which contains one electron in the p subshell?

The element X in group 17 has 3 shells. If so: Write the subshell electronic configura-tion of the element.

There are 4 shells in the element X. The 3d subshell of X contains 6 electrons. (symbol is not real) a. Write down the complete subshell electronic configuration of X. b. Identify the Group and block. c. Write two characteristics of the elements in which X is included? d From which subshell does this element loses its electrons to show +2 oxidation state?

The atom of a compound in the 4^(th) period has 3 electrons in the d subshell just inside the outer most shell: To which group does this compound belong?

Which atom loses electron? Which atom gain electron?

Among the 3s & 3p subshells which has higher energy?

Which are the elements in which the last electron enters the d subshell?

Complete the subshell electronic configuration of He?

Certain subshells of an atom are given below. 2s,2d,3f,3d,5s,3p: Which are the subshells that are not possible? Give the reason.