Which of the following elements of IIIA group forms basic oxide?
Correct answer: D. Tl
- A. B
- B. Al
- C. Ga
- D. Tl
Explanation
Thallium (Tl) is the correct answer because it is a metal from Group IIIA (Group 3) of the periodic table that can form basic oxides.Basic oxides, also known as basic anhydrides, are oxides of metals that react with water to form a base (alkaline) solution. Thallium, being a metal, can form oxides that exhibit basic properties.Options A, B, and C are incorrect because Boron (B), Aluminum (Al), and Gallium (Ga) are metals from Group IIIA, but they do not typically form basic oxides.
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The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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