What type of bond will form if an element with a electro negativity of 3.1 bonds to an element of electro negativity of 0.9

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What is the work done by the electric force to move a 1 c charge from a to b?

What happens to the concentration of hydronium ions as the ph of a solution increases? a. hydronium ion concentration stays the same b. hydronium ion concentration decreases c. hydronium ion concentration increases