1. Tardigrade
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  3. Chemistry
  4. Which one of the following forms a basic oxide?

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Q. Which one of the following forms a basic oxide?

TS EAMCET 2016

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. $Al$ and $Ga$ form amphoteric oxide and $B$ (Boron) forms acidic oxide.