The oxidation number of Pt in is
+1
+2
+3
+4
As we learnt in
Oxidation number -
It is represented by roman numeral in parenthesis following the name of coordination entity.
- wherein
Eg.
x-4 = -2
x= 2
Let X be the oxidation number of Pt
X + (-3) = -1
X = +2
Option 1)
+1
This option is incorrect
Option 2)
+2
This option is correct
Option 3)
+3
This option is incorrect
Option 4)
+4
This option is incorrect