Review 5

Review 5

1)      What is F-centre?

2)   What do you mean by F-center?                                          

3)   Sometimes, common salt is yellow instead of being pure white. Why? 

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Review 5 Answers

1)    The site where electron is entrapped in the anion vacancy is called F-centre.

2)   The anion sites which are cccupied by unpaired electron are called F-centres.

3)   Sometimes, common salt is yellow instead of being pure white due to the presence of electrons in some lattice sites in place of anions. These sites acts F-centers and impart colour to common salt.