| ⇦ | 
| ⇨ |
Boron has two stable isotopes, ¹°B(19%) and ¹¹B(81%). Average atomic weight for boron in the periodic table is
Options
(a) 10.8
(b) 10.2
(c) 11.2
(d) 10
Correct Answer:
10.8
Explanation:
Avg Atomic Mass = (RA1 x MN1 + RA2 x MN2) / (RA1+ RA2)
Where RA= Relative Abundance, MN= Mass Number
= 19 x 10 + 81 x 11 / 100 = 10.81
Related Questions: - Oxidation number of iron in [Fe(CN)₆]⁴⁻ is
- Which of othe following is paramagnetic?
- In the electrolysis of water, one faraday of electrical energy would evolve
- The molar fraction of nitrogen, in a mixture containing 70 grams nitrogen,
- Which of the following compound react with NaHCO3 solution to give sodium salt
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
- Oxidation number of iron in [Fe(CN)₆]⁴⁻ is
- Which of othe following is paramagnetic?
- In the electrolysis of water, one faraday of electrical energy would evolve
- The molar fraction of nitrogen, in a mixture containing 70 grams nitrogen,
- Which of the following compound react with NaHCO3 solution to give sodium salt
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