Help! I been researching for 4 hours, and I found some things, but I wanted to know what does it really and find some sources too.
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I have a research project on the element cobalt. I have read its a transition metal and when i look this up it, its defined as “an element whose atom has an incomplete d sub-shell”. What does this mean? Please explain what an incomplete d sub-shell means or if you can, try to explain what a transition metal is.
When I was a child, I could hear classical music in my head. I could improvise. I heard violins, cello, piano etc. I could hear complete pieces. Compositions. I was not born into a home with enthusiastic fans of classical music. In fact, hearing classical music in my home was extremely rare. At the time, it was a nuisance, and it disturbed my sleep. I am still able to think about classical music, and improvise, but the music has stopped playing by itself, in my head.