MCQ
Bond formed in crystal by anion and cation is
- ✓Ionic
- BMetallic
- CCovalent
- DDipole
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| $p ( mm Hg )$ | $50$ | $100$ | $200$ | $400$ |
| Relative $t _{1 / 2}( s )$ | $4$ | $2$ | $1$ | $0.5$ |
The order of the reaction is