What version of Premiere Elements on your Windows 7? Nevertheless....
No if all you have are Premiere Elements Windows installation files from purchase of an online download.
Premiere Elements Windows does not work on Premiere Elements Mac and vice versa. Also, project files from Windows version do not work on Mac version and vice versa.
If you had purchased the box packaging you would be expected to have two discs, one for Windows version and one for Mac version. Then use the Mac disc for installation of the product
If your purchase was from online download, then all you have are installation files specific to the computer operating system to which the files were downloaded.
I have Elements 11, installed by download - no disks
I do not have a disc drive for my iMac 27 Retina - can I download latest version of Elements via download ?
As far as I know, the download is single version only... you will need to buy new to install on a Mac
Yes. If your iMac does not have a built in burner for installation disc insertion, you can download Premiere Elements 13 to Mac from Adobe direct.
But, if you purchase the download, it would be specific for Mac. You will not have the perk of a box packaging where you get an installation disc for Windows
and an installation disc for Mac.
Consider also the tryout before purchase to assure the compatibility of your Premiere Elements 13 Mac with your specific Mac computer operating system and project goals.
Adobe includes that Premiere Elements 13 is not support on Mac OXS 10.7.