Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • (a) Following is the alignment of magnetic moments of a substance when placed in a magnetic field. Identify the type of magnetism exhibited by the substance. <img alt="" src="https://cdn.entrance360.com/media/uploads/2020/02/25/capture-17.JPG

(a) Following is the alignment of magnetic moments of a substance when placed in a magnetic field. Identify the type of magnetism exhibited by the substance.

(b) Analysis shows that nickel oxide has formula Ni_{0.98}O_{1.00}. What frctions of nickel exist as Ni^{2+} and Ni^{3+} ions?

 

 

 

 
 
 
 
 

Answers (1)

(a) Since all the magnetic moments are directed in the same direction, the substance exhibit ferromagntism.

(b) Ratio of Ni and O in Nickel oxide is,

\frac{Ni}{O}= \frac{0.98}{1.00}=\frac{98}{100}

Total nickel atoms for 100 atoms of oxygen is 98.

Let x be the number of nickel with +2 charge.

\therefore Nickel with +3 charge = 98 - x

charge of nickel = charge on oxygen

\therefore 2\times x + (+3)(98-x)= 2\times 100

     2 x +294-3x= 200

    -x = 200 - 294= -94

    x = 94

\therefore Nickel with +2 charge = \frac{94}{98}=96%

\therefore Nickel with +3 charge = 98-94=4 out of 98 =\frac{4}{98}=4%

Posted by

Sumit Saini

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE Board Result 2025 LIVE: Class 10th, 12th results by next week; DigiLocker codes, latest updates
anam-khan

Fake notice on CBSE 10th, 12th results 2025 in two-halves viral, board alerts students
anam-khan

CBSE Board Result 2025 LIVE: Class 10th, 12th results on cbse.nic.in soon; pass marks, DigiLocker code

Latest Question