The number of 2-centre-2-electron and 3-centre-2-electron bonds in B2H6, respectively, are:
p-Block Elements (Class 11) · Class 11 · JEE Main Previous Year Question
The number of 2-centre-2-electron and 3-centre-2-electron bonds in , respectively, are:
- a✓
4 and 2
- b
2 and 4
- c
2 and 2
- d
2 and 1
4 and 2
Strategy: Evaluate chemical statements about the behavior of Group 13 halides towards water.
Step 1: Hydrolysis Analysis Except for Boron trifluoride , most Group 13 halides undergo ready hydrolysis. For , the hydrolysis is partial because the resulting reacts with more to form the stable tetrafluoroborate ion:
Step 2: Selection The statement accurately describing this partial hydrolysis or the standard behavior of other halides aligns with the correct answer.
Practice this question with progress tracking
Want timed practice with adaptive difficulty? Solve this question (and hundreds more from p-Block Elements (Class 11)) inside The Crucible, our adaptive practice platform.
More JEE Main p-Block Elements (Class 11) PYQs
The number of neutrons present in the more abundant isotope of boron is 'x'. Amorphous boron upon heating with air forms a product, in which the oxidation state of boron is 'y'. The value of x + y is…
During the borax bead test with CuSO4, a blue green colour of the bead was observed in oxidising flame due to the formation of
Boric acid is solid, whereas BF3 is gas at room temperature because of
The Lewis acid character of boron trihalides follows the order:
When borax is heated with CoO on a platinum loop, blue coloured bead formed is largely due to