If the electronegativity difference between the elements in compound n a x is 2.1 what is element x
a. bromineb. chlorinec. fluorined. oxygen

Bromine (option A)  at 2.96 comes the closest to that value 3.03.

Explanation:

Step 1: Data given

The electronegativity difference between the elements of NaX (Na and X) is 2.1.

Step 2: Calculate the electronegativity difference

electronegativity difference of Na = 0.93

Na = 0.93

2.1  + 0.93 = 3.03

Electronegativity of the 4 elements

Br = 2.96

Cl = 3.16

F = 3.98

O = 3.44

Bromine (option A)  at 2.96 comes the closest to that value 3.03.

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