Electronegativity part 1-What is Electronegativity,polarity,electron affinity?

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in electronegativity part 1 video
You can get answers of all the questions which are related to basic understanding and definition of electronegativity.
Like what is electronegativity?
And how electronegativity difference is responsible for polarity in a chemical bond?
What is the basic difference in electronegativity and electron affinity?
Units of electronegativity and  units of electron affinity.
This video is also  giving you a good practice with plenty of questions with their very well explained answers.
In the end of the video the link of the quiz is also given.

Video link

Electronegativity part 1 

Quiz link-

Quiz on electronegativity part 1 



Watch the video and do the quiz. And this will ensure  complete understanding of meaning of  electronegativity and electron affinity.