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Which of the following elements will have the lowest first ionisation energy?
Options
(a) Li
(b) Mg
(c) Ca
(d) Rb
Correct Answer:
Rb
Explanation:
Rb belongs to I-A group and has maximum size. Hence, has lowest IE₁.
Related Questions: - Which expression is correct for the work done in adiabatic reversible expansion
- 2.5 Litre of 1 M NaOH solution mixed with another 3 litre of 0.5 M NaOH solution.
- KMnO₄ acts as an oxidising agent in the netural medium and gets reduced to MnO₂.
- In the following change,KMnO₄ → MnO₂, the oxidation state of Mn changes as
- In an organic compound phosphorus is estimated as
Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Classification of Elements and Periodicity
(94)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which expression is correct for the work done in adiabatic reversible expansion
- 2.5 Litre of 1 M NaOH solution mixed with another 3 litre of 0.5 M NaOH solution.
- KMnO₄ acts as an oxidising agent in the netural medium and gets reduced to MnO₂.
- In the following change,KMnO₄ → MnO₂, the oxidation state of Mn changes as
- In an organic compound phosphorus is estimated as
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Classification of Elements and Periodicity (94)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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