A) a metal with +3 oxidation state
B) a metal with +1 oxidation state
C) an inert gas
D) a metal with -3 oxidation state
Correct Answer: B
Solution :
The electronic configuration of the element (atomic number 19) is as \[1{{s}^{2}},2{{s}^{2}},2{{p}^{6}},3{{s}^{2}}3{{p}^{6}},4{{s}^{1}}\] This element is placed in IA group. So, it is a alkali metal and this element is potassium (K). It has one electron in its outermost shell. So, it can loose one electron easily and form positive ion hence, it is a metal and its oxidation number is +1.
You need to login to perform this action.
You will be redirected in
3 sec
