Question

The correct order of Pauling electronegativity values for Li,Na and K is:

• A. $Li>Na>K$
• B. $Li>K>Na$
• C. $Na>Li>K$
• D. $Li>K<Na$

Answer 1

The correct option is A $Li>Na>K$

solution:

moving right in the periodic table results in an increase in electronegativity and a decrease in electronegativity if we move downwards

hence $Li$ on the top for its group has highest electronegativity

and after that $Na$ and than $K$

hence the correct option A