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For alkali metals, which one of the following trends is incorrect
Options
(a) Hydration energy: Li > Na > K > Rb
(b) Ionization energy: Li > Na > K > Rb
(c) Density: Li< Na < K < Rb
(d) Atomic size: Li < Na < K < Rb
Correct Answer:
Density: Li< Na < K < Rb
Explanation:
Density gradually increases on moving down from Li to Cs. Potassium is, however, lighter than sodium. The abnormal value of potassium is due to unusual increase in atomic size, i.e., atomic volume.
Related Questions: - The catalyst SnCl₂ / HCl is used in
- Which of the following is not correct for ionic crystals
- n-Butane and isobutane are
- The values of heat of formation of SO₂ and SO₃ are -298.2 kJ and -98.2 kJ.
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Topics: S and Some P Block Elements
(157)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The catalyst SnCl₂ / HCl is used in
- Which of the following is not correct for ionic crystals
- n-Butane and isobutane are
- The values of heat of formation of SO₂ and SO₃ are -298.2 kJ and -98.2 kJ.
- Permanganate ion changes to ….. in acidic medium
Topics: S and Some P Block Elements (157)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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