Check sibling questions

(C) It has been observed that first ionization energy of 5 d series of transition elements are higher than that of 3d and 4d series, explain why? 

 

Answer

  • The transition elements of the 5d series have 4f orbitals which offer 5d electrons very weak shielding from nuclear force. 
  • Hence there is greater effective nuclear charge acting on outer valence electrons. 
  • Hence first ionisation energy of 5 d series of transition elements is higher than that of 3d and 4d series.
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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.