Two students were analysing the electronic configurations of the first 30 elements of the Periodic Table as part of an assignment. They found that two elements showed difference from other twenty eight elements.
Why they show this anomalous behavior?

Two students were analysing the electronic configurations of the first 30 elements of the Periodic Table as part of an assignment. They found that two elements showed difference from other twenty eight elements. a) Which are the two elements?

Two students were analysing the electronic configurations of the first 30 elements of the Periodic Table as part of an assignment. They found that two elements showed difference from other twenty eight elements. Write their electronic configurations.

Accounting from the following : 2nd period elements show anomalous behaviour

The outer most subshell electronic configuration of an element is 3d^(5)4s^2 . (d) This element shows variable oxidation state. Why?

Observe figure the electronic configuration of the second period elements of the group from 13-18 given below. Analyse table 3.1 and find whether there is any relation between the number of shells in an atom and the number of periods?

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?

When the element Fe with atomic number 26 undergo chemical reactions, ions with +3 oxidation state are formed. a) Write the subshell electronic configuration of Fe. b) Write the subshell electronic configuration of the ions formed during chemical reactions. c) Does the element show various oxidation states. Why?