Question

Transition elements are elements of :

• A. s block
• B. p block
• C. f block
• D. d block

Answer 1

Answer:

D. d block

• Elements in which last electron enters in d orbitals are known as d-block elements.
• All transition elements are d block elements and have unpaired d-orbital electron/s either in their ground state or in any stable excited state.
  
  
• For some d-block elements like Zn, Cd, and Hg, the ground state or stable excited state lacks unpaired electron in d-orbital.
• So, these elements do not show most of the properties of transition element. Thus, on the basis of electronic configuration, all d block elements such as Zn, Cd and Hg are not the transition elements.