In ${\mathrm{FeCl}}_3$, iron loses $3$ electrons to form ${\mathrm{Fe}}^{3+}$ion. If so, which will be the subshell from which iron loses the third electron?
 

Some compounds of transition elements are given below. Find more coloured compounds and extend the list.

• Copper sulphate.
• Copper nitrate.
• Potassium permanganate.
• ______________.
• ______________.

The outermost electronic configuration of an element in this is $2{\mathrm{s}}^{2}2{\mathrm{p}}^6$

Which is the element?

The outermost electronic configuration of an element in this is $2{\mathrm{s}}^{2}2{\mathrm{p}}^6$

Write down the complete sub-shell electronic configuration?

The outermost electronic configuration of an element in this is $2{\mathrm{s}}^{2}2{\mathrm{p}}^6$

Write any two characteristics of this element?