all ATT 143 PM Question T7VC Question 1 Place the following

all AT&T; 1:43 PM Question T7VC Question 1 Place the following species in order from highest ionization energy (on the top) to lowest ionization energy (on the botto) Sorting Al Si Unanswered Submit

Solution

Highest : F

C

Si

Lowest : Al

Ionization increases along the period (row) since the atomic radius decreases. Fluorine (F) is the farthest to the right, hence it has highest ionization energy.

Down the group (column), ionization energy decreases as the atomic size increases. So Al which is in the second row and to left of the given elements in the period it has lowest ionization energy.