Q.

Which of these elements has the greatest  electronegativity? 

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a

Br

b

N

c

O

d

S

answer is C.

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Detailed Solution

While nitrogen only contains seven protons in its nucleus, oxygen has eight. The nucleus of oxygen will attract a bonding pair more strongly than that of nitrogen, hence oxygen has a higher electronegativity.

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Which of these elements has the greatest  electronegativity?