First, check the position of the ligand in the spectrochemical series. If it is a strong field ligand like CN⁻, it causes large crystal field splitting, leading to a low spin complex. Weak field ligands like I⁻ result in high spin complexes. We simply memorize the series order for the exam.
But honestly, I relate this to my father’s old shop facing the new supermarket—everyone says the big, modern option is stronger and will force us to “pair up” and close. Yet, here we are, still standing, a bit like a high spin complex refusing to pair electrons against the odds. The obvious answer says strong field always wins, but my life shows weak fields can have their own stubborn stability.
#sri-lanka#spin
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