Which among the following elements has the lowest value of electronegativity?

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:

The electronegativity of the following elements increases in the order:

How would you react to the statement that the electronegativity of $N$ on Pauling scale is $3.0$ in all the nitrogen compounds?

Aqueous solutions of two compounds $M_1OH$ and $M_2OH$ are prepared in two different beakers. If the $EN$ of $M_1 = 3.4$,$EN$ of $M_2 = 1.2$,$EN$ of $O = 3.5$,and $EN$ of $H = 2.1$,then the nature of the two solutions will be: