Questions
Match the following columns and choose the correct option from the codes given below.
| Column – I (Element) | Column – II (Element) (Density/g cm-3 at 298K) | ||
| a) | Ga | i) | 11.85 |
| b) | In | ii) | 5.90 |
| c) | Al | iii) | 2.70 |
| d) | B | iv) | 7.31 |
| e) | TI | v) | 2.35 |
| (a) | (b) | (c ) | (d) | (e) | |
| (1) | ii | iv | iii | v | i |
| (2) | iii | v | i | iv | ii |
| (3) | ii | v | iv | i | iii |
| (4) | i | iv | iii | ii | v |
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Correct option is A
density increases down the group as atomic mass increases.Hence a–ii, b–iv, c–iii, d–v, e–iSimilar Questions
The bond dissociation energy of BF bond in BF3 is 646 kJ mol–1 whereas that of CF in CF4 is 315 kJ mol–1. The correct reason for higher BF bond dissociation energy as compared to that of CF bond is :
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