How many atoms surround each other atom in a crystal of cobalt (cobalt has a hexagonal close packed structure)?

When is the deadline for the pre-workshop tasks?

What is the deadline for submission of the homework questions?

What is the minimum exam mark required to pass this unit?

If you find a paragraph or diagram in a book or website, and slightly rephrase or redraw it for a piece of assessed work, do you need to include a reference? Explain why.

The material wood is best categorised in which class of materials?