Question

for the HF, AsF5, SeF4, AsF3, SeF6 fluoride compounds draw lewis structures and label F-X-F bond angles

Answer 1

In Lewis structure , the atoms are drawn showing the valence electrons and bonds are then formed by pairing up valence electrons of the atoms involved in the bond-making process.

The electrons which are not involved in bonding are shown by dots , the red dots in the below Lewis structures are of fluorine atoms and the blue dots are for the central atom.

All fuorine atoms have six valence electrons in all the structures because only one electron is used in forming a single bond with the central atom and other 6 valence electrons are non bonding.

(Note: In question only F - X- F bond angles are asked and HF don't jave two fluorine atoms so bond angle is not shown )