chemistry hw

Question

Rank from most to least electronegative. To rank items as equivalent, overlap them:

Cobalt, Potassium, Phosphorus, Fluorine

Answer 1

This solution comes on understanding the periodic table.

The electronegativity of the elements increases from top to bottom in Groups and left to right in Periods.

From most to least-

Cobalt and Fluorine with electron configuration of 2 and 7 in the outermost orbit

Potassium with configuration of 2 and 7 electrons in the second orbit.

Phosphorous with 7 electrons in the second orbit, configuration of 2 and 5.

Observe the Atomic Number of the element to predict the electronegativity.

 

Answer 2

Least electronegative is K and most is F.

The order would be K < Co < P < F

EN increases from left to right and from bottom to top