Windows II on a older Mac
Will Windows 11 run on an iMac with an Intel i5 3.2 GHz processor, 8 RAM? I wanted to use Boot Camp to install.
Earlier Mac models
That is a problem. Boot Camp only supports Windows 7, 8 and 10. And then only from Sierra through Mojave.
I think MS announced over three years ago now Win 7 support had ended. Win 8 probably wasn't far behind. Finding full version copies you could use won't be easy, and will likely be exorbitantly priced.
You can download a 64 bit, Win 7 .iso file directly from MS, but that's not the same as having a license to activate it.