Question

For the element Z, a student (A) measured its radius as 104nm,
student (B) as 110nm and (C) as 90 nm using same apparatus. Their
teacher explained that measurements were correct by saying that
recorded values by (A), (B) and (C) are respectively.
Select one:
O a. Hydrogen, ionic and covalent radi
Ob
van der Waal, ionic and covalent radi
oc. Crystal, van der Waal and covalent radi
dcovalent crystal and van der Waalradii​

Answer 1

Answer:

Van der wall's radius > Metallic radius (crystal) > Covalent radius

So A, B and C are crystal, van der Waals' and covalent radii respectively.