Exams › JEE Main › Chemistry

Carbon, silicon and germanium show catenation in the order Ge < Si < C. Which set gives the bond dissociation energies (in kJ mol−1) for C–C, Si–Si and Ge–Ge bonds, respectively?

1. 348, 297, 260
2. 297, 348, 260
3. 348, 260, 297
4. 260, 297, 348

Correct answer: 348, 297, 260

Solution

Since catenation decreases Ge<Si<C, the bond energies are C-C (348) > Si-Si (297) > Ge-Ge (260) - option 0. The stored order is reversed.

Related JEE Main Chemistry questions

• Which of the following arrangements shows the decreasing order of acidic nature?
• Which one of the following oxides shows amphoteric behaviour?
• In boric acid (H₃BO₃), the hybridization states of the boron atom and the oxygen atoms are, respectively,
• A xenon fluoride compound contains 53.5% xenon by mass. What oxidation state does xenon have in this compound?
• For a cement of good quality, what should be the approximate ratios of the following? I. Silica to alumina II. CaO to the combined oxides of SiO2, Al2O3 and Fe2O3
• Because the ns² electrons of the valence shell do not readily take part in bonding, which statement is correct?

⚔️ Practice JEE Main Chemistry free + battle 1v1 →