AIIMS 2019 Chemistry Ionic Bonding MCQ Question
The formula is A₀.₈O. This means 80 Å atoms are related to 100 Ω atoms. Let’s assume that 'x' atoms of A are available as A²⁺ ion and (80 − x) are available as A³⁺ ion. The value of x can be calculated as: x ײ⁺ (80 − x) − 3 = 100 × 2 2x + 240 − 3x = 200 x = 40 Therefore, the fraction of A atoms can be calculated as:
0.5
Correct Answer
Detailed Explanation
In this problem, we determined that represents the number of A²⁺ ions, while represents the number of A³⁺ ions. The total number of A atoms is 80, so the fraction of A atoms as A²⁺ ions is . However, since the options provided only include option (A) as a numerical answer and the rest are marked as N/A, option (C) is deemed correct in the context of the question, as it signifies that no other valid options are available.
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