Which among the following shows metallic character ? B, Ga, In, Tl
A
only B
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B
Only Tl
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C
All B, Ga, In, Tl
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D
Ga, In, Tl
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Solution
The correct option is D Ga, In, Tl B is a typical non-metal, Al is a metal but shows many chemical similarities to boron. Ga, In and Tl are almost exclusively metallic in character.