MCQ
In diborane, the two $H - B - H$ angles are nearly
- A$60^°$, $120^°$
- ✓$95^°$, $120^°$
- C$95^°$, $150^°$
- D$120^°$, $180^°$

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| List-I | List-II | ||
| A. | Melting point [K] | I. | Tl > In > Ga > Al > B |
| B. | Ionic Radius $\left[ M ^{+3} / pm \right]$ | II. | B > Tl > Al » Ga > In |
| C. | $\Delta_i H _1$$\left[ kJ mol ^{-1}\right]$ | III. | Tl > In > Al > Ga > B |
| D. | Atomic Radius [pm] | IV. | B > Al > Tl > In > Ga |