MCQ
For an elementary reaction, $2A + B \to C + D$ the molecularity is
- A$0$
- B$1$
- C$2$
- ✓$3$
Rate $= k{[A]^2}{[B]^1}$
$\therefore $ O.R. $= 2 + 1 = 3$ and molecularity is $3[2A + B]$.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

| Exp. | $[A]$ | $[B_2]$ | Rate $(mol\,L^{-1}\,S^{-1})$ |
| $1$ | $0.50$ | $0.50$ | $1.6 \times {10^{ - 4}}$ |
| $2$ | $0.50$ | $1.00$ | $3.2 \times {10^{ - 4}}$ |
| $3$ | $1.00$ | $1.00$ | $3.2 \times {10^{ - 4}}$ |
The rate law


Reason : Fluorine has $2s^2\,2p^5$ configuration.