A transition metal X has a configuration [Ar] 3d4 in its +3 oxidation state. What is its atomic number?:
As we learnt in
'd' Block in periodic table -
In periodic table, the 'd' block elements are present between s and p block elements by the position and the three rows of transition metal are 3d 4d 5d, the 6d series is still incomplete.
- wherein
Atmoic number of Ar is 18. Add 4 for the the d-electrons. Then add 3 more for the Oxidation state.
Hence, Atomic no. = 18+4+3 = 25
Option 1)
This answer is correct
Option 2)
This answer is incorrect
Option 3)
This answer is incorrect
Option 4)
This answer is incorrect