In the third row of the periodic table,from $Na$ to $Cl$:

Which one of the following correctly represents the variation of electronegativity $(EN)$ with atomic number $(Z)$ of group $13$ elements?

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

What is electronegativity? Explain its periodicity in the periodic table.

Arrange the following bonds in order of increasing ionic character: $C-O, C-N$ and $C-C$. Give reasons.

The elements $X, Y$ and $Z$ form oxides which are acidic,basic and amphoteric respectively,then the correct order of their electronegativities is