The correct order of bond enthalpy () is:

Question

Canvas Classes · Accepted Answer

Bond enthalpies of Group 14 E–E bonds:

| Bond | Enthalpy (kJ/mol) |
|---|---|
| C–C | 346 (highest) |
| Si–Si | 226 |
| Ge–Ge | 188 |
| Sn–Sn | 151 (lowest) |

Bond enthalpy decreases down the group as atomic size increases and orbital overlap decreases.

Order:

Answer: Option (4)

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