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Which of the following order of element is wrong?
Options
(a) NH₃ < PH₃< AsH₃– Acidic
(b) Li < Be < B < C – First IP
(c) Al₂O₃< MgO < Na₂O < K₂O – Basic
(d) Li⁺< Na⁺< K⁺< Cs⁺ – Ionic radius
Correct Answer:
Li < Be < B < C – First IP
Explanation:
Along the period, I.P. generally increases butnot regularly. Be and B are exceptions. First I.P. increases in moving from left to right in a period, but I.P. of B is lower than Be
Related Questions: - Nitromethane reacts with chlorine in the presence of a base to give
- The number of valence electrons in 4.2g of N³⁻ ion is
- The pair of compounds that can exist together is
- The common oxidation state shown by lanthanides in their compounds is
- A nucleophilic substitution reaction proceeds through SN1 mechanism.
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
- Nitromethane reacts with chlorine in the presence of a base to give
- The number of valence electrons in 4.2g of N³⁻ ion is
- The pair of compounds that can exist together is
- The common oxidation state shown by lanthanides in their compounds is
- A nucleophilic substitution reaction proceeds through SN1 mechanism.
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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