JEE Advance - Chemistry (1993 - No. 10)
The basic nature of the hydroxides of group 13 (Gr. III B) decreases progressively down the group.
TRUE
FALSE
Explanation
The answer is FALSE.
Here's why:
- Basic Nature and Metallic Character: The basic nature of hydroxides is related to the metallic character of the element forming the hydroxide. As you move down a group in the periodic table, metallic character increases.
- Group 13 Trends: In Group 13, as you move down the group from Boron (B) to Thallium (Tl):
- Metallic character increases.
- The size of the atom increases.
- The tendency to lose electrons increases.
- Hydroxide Formation: This increased metallic character leads to more ionic bonds between the metal and the hydroxide (OH-) group. More ionic bonds mean easier dissociation into ions in solution, making the hydroxide more basic.
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