The coordination number and oxidation number of X in the compound [X(SO4)(NH3)5] will be:
Correct answer: C. 6 and 2.
- A. 10 and 3.
- B. 1 and 6
- C. 6 and 2.
- D. 6 and 4.
Explanation
[X(SO4)(NH3)5] contains X in +2 oxidation state and the coordination number is 6. The coordination number represents the total number of ions, and compounds that surround the central metal atom/ion. In this case, we have 5 NH3 compounds and a sulfate ion, making a total of 6. As for the oxidation state of X, we only have sulfate ion bearing a negative 2 charge. Since the complex is neutral, it would imply that X bears a charge of +2, to balance out the -2.
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Transition elements are identified by their partially filled d subshells in atoms or common ions. The topic covers the electronic structure of d-block elements, including the filling order of 4s and 3d orbitals, variable oxidation states and the distinction between transition elements and elements with completely filled d subshells.
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