You can use Apple Pencil (1st generation) with these iPad models:

iPad mini (5th generation)

iPad (6th, 7th, 8th, and 9th generation)

iPad (10th generation)

iPad Air (3rd generation)

iPad Pro 12.9-inch (1st and 2nd generation)

iPad Pro 10.5-inch

iPad Pro 9.7-inch

**** You need the USB-C to Apple Pencil Adapter to pair and charge Apple Pencil with iPad (10th generation).