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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: - In the cyanide ion, the formal negative charge is on
- Which of the following is obtained when sodium phenoxide is heated with ethyl
- Molecular mass of a compound having empirical formula C₂H₅O is 90.
- By increasing the temperature , the vapour pressure of a substance
- The total number of atomic orbitals in fourth energy level of an atom is :
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
- In the cyanide ion, the formal negative charge is on
- Which of the following is obtained when sodium phenoxide is heated with ethyl
- Molecular mass of a compound having empirical formula C₂H₅O is 90.
- By increasing the temperature , the vapour pressure of a substance
- The total number of atomic orbitals in fourth energy level of an atom is :
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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