JEE Main 20198 AprilEvening Shift
- Exam
- JEE Main
- Year
- 2019
- Date
- 8 April
- Shift
- Evening Shift
- Subject
- Chemistry
- Chapter
- d and f Block Elements
JEE Main 2019 · 8 April · Evening Shift · Chemistry · d and f Block Elements
The statement that is INCORRECT about the interstitial compounds is:
The statement that is INCORRECT about the interstitial compounds is:
Options
- AThey have high melting points.
- BThey are very hard.
- CThey are chemically reactive.
- DThey have metallic conductivity.
Correct answer
C. They are chemically reactive.
Step-by-step solution
The principal physical and chemical characteristics of interstitial compounds are as follows:
(i) They have high melting points, higher than those of pure metals.
(ii) They are very hard, some borides approach diamond in hardness.
(iii) They retain metallic conductivity.
(iv) They are chemically inert.