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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.
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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
- Number of chiral carbon in β-D-(+) glucose is
- During change of O₂ to O₂⁻ ion, the electron adds on which one of the following
- A solution of nickel sulphate in which nickel rod is dipped is diluted 10 times.
- The total number of isomeric alcohols with the molecular formula C₄H₉OH is
- 0.45 g acid of molecular weight 90 was neutralise by 20 mL of 0.5 N KOH
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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