Question:

The secondary valency and the number of hydrogen bonded water molecule(s) in $\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}$, respectively, are

  1.  6 and 4

  2.  4 and 1

  3. 6 and 5

  4. 5 and 1


Correct Option: , 2

Solution:

Hydrogen bonded water molecule $=1$ Secondary valency $=4$

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