| ⇦ | 
| ⇨ |
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: - Assuming fully decomposed, the volume of CO₂ released at STP on heating 9.85g
- Bromine water reacts with SO₂ to form
- The number of unpaired electron in Mn²⁺ is
- Which of the following is the coldest region
- Excess nitrate in drinking water can cause
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
- Assuming fully decomposed, the volume of CO₂ released at STP on heating 9.85g
- Bromine water reacts with SO₂ to form
- The number of unpaired electron in Mn²⁺ is
- Which of the following is the coldest region
- Excess nitrate in drinking water can cause
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
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply