91Ó°ÊÓ

We need to find electron arrangement for phosphorus.

Atomic number phosphorus =$15$

Symbol =$P$

Electron arrangement =$2,8,5$

Hence, electron arrangement of phosphorus is$2,8,5$

We need to find electron arrangement for neon.

Atomic number neon =$10$

Symbol =$Ne$

Electron arrangement =$2,8$

Hence, electron arrangement of neon is$2,8$

We need to find electron arrangement for sulfur.

Atomic number sulfur =$16$

Symbol =$S$

Electron arrangement =$2,8,6$

Hence, electron arrangement of sulfur is$2,8,6$.

We need to find electron arrangement for magnesium.

Atomic number magnesium =$12$

Symbol =$Mg$

Electron arrangement =$2,8,2$

Hence, electron arrangement of magnesium is$2,8,2$.

We need to find electron arrangement for aluminum.

Atomic number aluminum =$13$

Symbol =$Al$

Electron arrangement =$2,8,3$

Hence, electron arrangement of aluminum is$2,8,3$

We need to find electron arrangement for fluorine.

Atomic number fluorine =$9$

Symbol =$F$

Electron arrangement =$2,7$

Hence, electron arrangement of fluorine is$2,7$