Question

Which group metal are non transition element?

• A. $2^{nd}$ group
• B. ${12}^{th}$ group
• C. ${16}^{th}$ group
• D. ${18}^{th}$ group

Answer 1

Answer: (A)

$2^{nd}$ group

• A transition metal is one that forms one or more stable ions which have incompletely filled d orbitals.
• On the basis of this definition, scandium and zinc do not count as transition metals - even though they are members of the d block.
  
• So, among the given options, option A is the correct answer as they are Alkaline earth metals and don't have incompletely filled d-orbitals.