AP EAMCET · Chemistry · Classification of Elements and Periodicity in Properties
Which of the following orders is not correct against the given property
- A \(\mathrm{Ga} \lt \mathrm{In} \lt \mathrm{Tl} \lt \mathrm{A} 1 \lt \mathrm{B}\) - melting point
- B \(\mathrm{Al} \lt \mathrm{Ga} \lt \mathrm{In} \lt \mathrm{Tl} \lt \mathrm{B}\) - Electronegativity
- C \(\mathrm{B} \lt \mathrm{Al} \lt \mathrm{Ga} \lt \mathrm{In} \lt \mathrm{Tl}-\) density
- D \(\mathrm{B} \lt \mathrm{Al} \lt \mathrm{Ga} \lt \mathrm{In} \lt \mathrm{Tl}\)-atomic radius
Answer & Solution
Correct Answer
(D) \(\mathrm{B} \lt \mathrm{Al} \lt \mathrm{Ga} \lt \mathrm{In} \lt \mathrm{Tl}\)-atomic radius
Step-by-step Solution
Detailed explanation
Atomic radius of gallium is less than aluminium. Correct order : \(\mathrm{B} \lt \mathrm{Al}\gt\mathrm{Ga} \lt \mathrm{In} \lt \mathrm{Tl}\)
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