Will all of this work together?

[Tensus]

Pentium G4560
Crucial PC2400 8 GB CL16 DDR4 Memory Module
ASUS PRIME B250M-K Motherboard - Black (Socket 1151/B250/DDR4/S-ATA 600/Micro ATX)

 

[Dustybin]

Almost certainly yes it is fine.

You can check memory support for your motherboard on the ASUS website https://www.asus.com/uk/Motherboards/PRIME-B250M-K/HelpDesk_QVL/ you need the full code like on the pdf to match your module against the list.