Which of the following is most electronegative?

The attraction that an atom exerts on a pair of electrons that are being shared between that atom and another atom to which it is bonded by a covalent bond is referred to as its

The values of electronegativity of atoms $A$ and $B$ are $1.20$ and $4.0$ respectively. The percentage of ionic character of $A-B$ bond is ............. $\%$

Pauling's electronegativity values for elements are useful in predicting:

Which among the following elements has the highest electronegativity?

Electronegativity of beryllium $(Be)$ is approximately equal to that of