Statement TypeDirection (Q. No. 25) This section is based on Statement...
Osmium has the electronic configuration 5de6s2. As 5d and 6s are close in energy, all the 8 electron can participate in bonding. highest oxidation state of osmium is +8 due to its ability to expand their octet by using its all 8 electrons (2 from 6s and 6 from 5d).
Statement TypeDirection (Q. No. 25) This section is based on Statement...
Explanation of Statements
The question involves two statements regarding osmium, a transition metal in the periodic table.
Statement I: The highest oxidation state of osmium is +8.
- This statement is correct.
- Osmium can exhibit a maximum oxidation state of +8, which is observed in compounds like osmium tetroxide (OsO4).
- This high oxidation state is characteristic of some transition metals, particularly those in the d-block.
Statement II: Osmium is a 5-d block element.
- This statement is also correct.
- Osmium is located in the 5th period of the periodic table and belongs to the d-block elements, specifically the transition metals.
- The presence of d electrons allows osmium to participate in various oxidation states.
Relationship Between Statements
- Statement II provides information about the classification of osmium as a 5-d block element, which is relevant to its ability to attain high oxidation states.
- Therefore, Statement II serves as the rationale for Statement I, as being a d-block element facilitates the range of oxidation states observed in osmium.
Conclusion
- Since both statements are correct and Statement II correctly explains Statement I, the correct answer is option A.
- This reflects a coherent understanding of osmium's chemical properties and its position in the periodic table.