CBSE Class 11-science Answered
Why the electron after 6s1 and 6s2 enters 5d instead of 4f which is in accordance with the aufbau principle?
Asked by ashwinikumar59 | 24 Sep, 2010, 08:48: AM
Expert Answer
lanthanum has outer shell electronic configuration as 5d1 6s2 rather than expected beacuse as we go far from's' orbital to 'f' orbital, energy gap between d' and 'f' is very less, hence aufbau principle get disobeyed in these elements because of negligible energy difference.
Answered by | 24 Sep, 2010, 10:44: AM
Concept Videos
CBSE 11-science - Chemistry
Asked by dreamaqua2017 | 04 Feb, 2024, 04:25: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by kamyabansal2905 | 16 Jul, 2022, 07:11: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by Chaithujonnala1020 | 22 Jul, 2021, 06:00: AM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by muzainakallatra7 | 28 Mar, 2021, 09:28: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by jigneshd5127 | 18 Jan, 2021, 09:16: AM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by akhilshrivallibrundapallavi123 | 06 Nov, 2020, 07:15: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by negimanish9735 | 28 Oct, 2020, 09:30: AM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by abhishhadnur | 28 Sep, 2020, 04:04: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by sulaikhasulu393 | 30 May, 2020, 11:30: AM
ANSWERED BY EXPERT