| ⇦ | 
| ⇨ |
If Nₐ is Avagadro number then number of valence electrons in 4.2g of nitride ions (N³⁻) is
Options
(a) 2.4 Nₐ
(b) 4.2 Nₐ
(c) 1.6 Nₐ
(d) 3.2 Nₐ
Correct Answer:
2.4 Nₐ
Explanation:
At weight of nitrogen= 14
No of moles of nitride ion = 4.2/14 = 0.3 mol
= 0.3 x Nₐ nitride ions
One N³⁻ ion contains 8 valence electrons. 5 + 3 due to charge.
Valence electrons = 8 x 0.3 Nₐ = 2.4 Nₐ
Related Questions: - In an exothermic reaction(reversible) which of the following has positive value
- Crystal field stabilization energy for high spin d⁴ octahedral complex is
- Which of the following has lowest pH value
- Which one of the following is an example of thermosetting polymer
- The mixture of concentrated HCl and HNO₃ made in 3:1 ratio contains
Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Basic Concepts of Chemistry
(94)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In an exothermic reaction(reversible) which of the following has positive value
- Crystal field stabilization energy for high spin d⁴ octahedral complex is
- Which of the following has lowest pH value
- Which one of the following is an example of thermosetting polymer
- The mixture of concentrated HCl and HNO₃ made in 3:1 ratio contains
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Basic Concepts of Chemistry (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