NEET
- Exam
- NEET
- Subject
- Chemistry
- Chapter
- Hydrogen
NEET · Chemistry · Hydrogen
Why are most hydrides formed by d-block and f-block elements almost...
Why are most hydrides formed by d-block and f-block elements almost always non-stoichiometric?
Options
- AThey contain excess hydrogen atoms.
- BThey have a different lattice structure from their parent metals.
- CThey lack hydrogen atoms.
- DThey obey the law of constant composition.
Correct answer
B. They have a different lattice structure from their parent metals.
Step-by-step solution
Most hydrides formed by d-block and f-block elements are almost always non-stoichiometric because they have a different lattice structure from that of their parent metals, leading to variations in hydrogen content and not obeying the law of constant composition.