Q16 / 160 · TS EAMCET 2016 · Chemistry

Which one of the following forms a basic oxide?

A
B
Correct answer
B
TI
C
$\mathrm{Al}$
D
$\mathrm{Ga}$

Solution

More the element has metallic character, more basic is its oxide. As the metallic character increases down the group hence, thallium (TI) has highest metallic character (among the given option) and forms the basic oxide. $\mathrm{Al}$ and $\mathrm{Ga}$ form amphoteric oxide and B (Boron) forms acidic oxide.

Hence, the correct answer is option: 'B'.

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