In d block chemistry, Copper and Chromium electron configuration do not follow the electron filling trend , why is this?
Copper has a [Ar]4s1 4d10 whereas Chromium has a [Ar]4s14d5 electron configuration as this d shell configuration of either half full d shell (5 electrons) with only one electron per orbital or fully full d shell orbital (10 electrons) makes it more energetically stable for the electron in 4s2 (trend in electron filling in d block metals) to go and make that half full or fully full shell and therefore yield 4s1 breaking the trend
FS
Related Chemistry A Level answers
All answers ▸What are the special properties of graphite and diamond- why are they different.
Calculate the empirical and molecular formula of the molecule giving rise to the molecular ion peak at 148 m/z. The percentage composition by weight is 64.80 % carbon, 13.62 % hydrogen, and 21.58 % oxygen
why does silicon dioxide have such a high melting/boiling point?
Why does the first ionisation energy generally increase across a period? Explain why there are dips in energy between groups 2 and 3 and groups 5 and 6?