D-And F-Block Elements Ques 8
Question: In solid $ CuSO_4.5H_2O $ copper is co-ordinated to
[MP PET 1985, 86]
Options:
A) Five water molecules
B) Four water molecules
C) One sulphate anion
D) One water molecule
Show Answer
Answer:
Correct Answer: B
Solution:
Four water molecules. $ CuSO_4.5H_2O $ is a crystalline salt.
Four $ H_2O $ molecules attach to copper forming a square planar symmetry and two oxygen atoms from $ SO_4^{2-} $ ion complete the distorted octahedron.
The fifth water molecule is attached through hydrogen bonding between one of the co-ordinated water molecule and one of the sulphate ion.
