Examples: Li, Na, K C, N, O Ca, Sr, Ba Cl, Br, I S, Se, Te Mn, Cr, Fe
Elements of the Iron triad have magnetic properties.
The elements iron, cobalt, and nickel make up the iron triad.
chlorine, iodine and another make up the halogen triad. The halogens are: Fluorine Chlorine Bromine Iodine AstatineDoesn't sound like a triad to me.
iron cobalt and nickel are magnetic the others are not.
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