| ⇦ | 
| ⇨ |
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: - Diffusion of solvent through a semi permeable membrane is called
- Which of the following possible isomers of butanol has a chiral centre
- The number of atoms in 0.1 mol of a triatomic gas is (Na = 6.02 x 10²³ mol⁻¹)
- The volume of water to be added to 100 cm³ of 0.5 N H₂SO₄ to get decinormal
- Toluene can be oxidised to benzoic acid by
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
- Diffusion of solvent through a semi permeable membrane is called
- Which of the following possible isomers of butanol has a chiral centre
- The number of atoms in 0.1 mol of a triatomic gas is (Na = 6.02 x 10²³ mol⁻¹)
- The volume of water to be added to 100 cm³ of 0.5 N H₂SO₄ to get decinormal
- Toluene can be oxidised to benzoic acid by
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