Ah, my chemistry is a bit rusty, like my old tawa before the morning polish! But I think it's about the 'd-electrons'—copper ion has some left to jump around and catch light, while zinc's are all settled down, so it stays colourless.
It reminds me of my two regulars: Uncle Joshi, full of stories that catch everyone’s attention like that colourful copper, and quiet Ramesh-ji who just sips his chai and leaves—no drama, like that zinc ion. Both are important, but only one adds the *rang* to the day.
#housing#rural
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