Shristy Maurya Asked a Question
October 1, 2020 10:18 pmpts 30 pts
The lanthanide contraction is due to: (a) Filling of 5d before 4f (c) Filling of 4f before 5d 10) 9) (b) Filling of 4d before 4f (d) Filling of 4f before 4d Ln (trivalent lanthanide ions) have electroni configuration.
  • 2 Answer(s)
  • 0 Likes
  • 2 Comments
  • Shares
  • Dinesh khalmaniya thankyou
    option C Cause. The effect results from poor shielding of nuclear charge (nuclear attractive force on electrons) by 4f electrons; the 6s electrons are drawn towards the nucleus, th...
    Show more
    Likes(0) Reply(0)
  • Priyanshu kumar Best Answer
    Lanthanoid contraction effect results from poor shielding of nuclear charge (nuclear attractive force on electrons) by 4f electrons (filling of 4f is done before 5d); the 6s electr...
    Show more
    Likes(0) Reply(1)
    Priyanshu kumar
    4f before 5d...option C
Head Office :
MPA 44, 2nd floor, Rangbari main Road Mahaveer Nagar II, Kota (Raj.) - 324005

Branch Office (Jaipur):
Shyam Tower, Plot No. F2, 6th Floor Amrapali Circle,
Vaishali Nagar, Jaipur, Rajasthan 302021

Mail: info@eduncle.com
All Rights Reserved © Eduncle.com