Here are the responses to your questions based on the principles of chemistry:
Question 1:
A) Which element would have the lowest electronegativity?
Response: an element with a large number of valence electrons and a large atomic radius
Question 2:
A) Which elements on the periodic table are the least reactive?
Response: the group with helium at the top
Question 3:
A) How are reactivity and electronegativity related?
Response: An element will be more reactive if it has a very high or very low electronegativity.
Question 4:
A) Which element listed would have the greatest electronegativity?
Response: fluorine
Question 5:
A) Which elements would react most easily with each other?
Response: an element with a high electronegativity and an element with a single valence electron
If you have any more questions or need further clarification, let me know!