Can I install Zorin 16 OS pro on a laptop intel i5 processor with 4GB of ram, 250GB SSD hard drive and intel wireless card?
Welcome to the forum. Zorin should run fine on your laptop. The laptop has sufficient resources and sounds reasonably vanilla (Intel onboard graphics and Intel wireless).
Be sure to follow the instructions for building an installation USB and boot the "Try Zorin OS" option from the USB. If that works without problems, you can go ahead and install. If you run into issues booting from the USB, come back and we will help you resolve any issues you run into (usually making sure that SecureBoot is turned off in your BIOS and resolving ACHI/RAID disk issues, if any).
I would also suggest you read this; Before you install