Bhaiya yaar, yeh spin-only magnetic moment ka formula toh yaad hai: μ = √[n(n+2)] BM, jahan n unpaired electrons hain. Fe2+ mein 4 unpaired, Ni2+ mein 2, aur Mn2+ mein 5 hote hain... bas calculate karo. Par yeh rattna mujhe ajeeb lagta hai, kyunki mere papa ke gaon mein loha to bilangad padha rehta hai, aur yahan yeh ions kitna magnetic dikhate hain. Isi liye main sochta hoon, kaash sab cheezein itni simple hoti jaise mere beti ke rang.
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