Write down the subshell electronic config-uration of `Fe^(2+)`.

The atomic number of Fe is 26. When Fe reacts with oxygen, ions with +3 oxidations states are formed. (Valency : Oxygen =2 ) a) Write the chemical formula of this compound. b) Write down the subshell electronic fonfiguration of Fe^3+ .

FeCl_2 and FeCl_3 are two different chlorides of iron. [Hint : Atomic Number of Fe = 26 Oxidation state of CI = (-1) Write down the subshell wise electronic configuration of Fe^(3+)

The element Cu with atomic number 29 undergoes chemcial reaction to formation with oxidation number +2: write down the subshell electronic con-figuration of the ion.

Complete the subshell electronic configuration of He?

Two compounds of iron are given below. FeSO_4 Fe_2(SO_4)_3 (The oxidation state of sulphate radical is -2): Write the subshell electronic confi-gruration of Fe^(3+) ion.

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 element Cu with atomic number 29 undergoes chemical reaction to form an ion with oxidation number +2. a) Write down the subshell electronic configuration of this ion? b) Can this element show variable valency? Why? c) Write down the chemical formula of one compound formed when this elemrnt reacts with chlorine (Cl_17)

Based on the hints given, find out the atomic numbers and write down the subshell electronic configuration of elements (Symbol and not real) i) A - period 3, group 6 ii) B - period 4, group 6

The outermost electronic configuration of A is 2s^2 2p^2 (Symbols are not real) a) Find the group number, block of this element. b) Write the chemical formula of the compound obtained by the reaction of A and chlorine. c) Write down the complete subshell electronic configuration of the element coming just below A in the same group of the periodic table?

Write the subshell electronic configuration of Manganese(Mn).