With increasing atomic number in a certain period:

Arrange $F$,$Cl$,$O$,and $N$ in the decreasing order of electronegativity.

The Pauling electronegativity values of elements are important in predicting which of the following?

Electronic configuration of four elements $A, B, C$ and $D$ are given below $:$
$(A) 1s^2 2s^2 2p^3$
$(B) 1s^2 2s^2 2p^4$
$(C) 1s^2 2s^2 2p^5$
$(D) 1s^2 2s^2 2p^2$
Which of the following is the correct order of increasing electronegativity $(Pauling's scale)$?

Which of these has no unit?

Which of the following bonds has the most polar character?