lewis structures

Question 1

2 bonding, 0 non-bonding

Answer 1

linear, 180, nonpolar if all perimeter atoms same

Question 2

3 bonding, 0 non-bonding

Answer 2

trigonal planar, 120, nonpolar if all perimeter atoms same

Question 3

2 bonding, 1 non-bonding

Answer 3

bent, 117, polar

Question 4

4 bonding, 0 non-bonding

Answer 4

tetrahedral, 109.5

Question 5

3 bonding, 1 non-bonding

Answer 5

trigonal pyramid, 107, polar

Question 6

2 bonding, 2 non-bonding

Answer 6

bent, 104.9, polar

Question 7

5 bonding, 0 non-bonding

Answer 7

trigonal bipyramid, nonpolar if all perimeter atoms same

Question 8

4 bonding, 1 non-bonding

Answer 8

seesaw, polar

Question 9

3 bonding, 2 non-bonding

Answer 9

T-shaped, polar

Question 10

2 bonding, 3 non-bonding

Answer 10

linear, nonpolar if all perimeter atoms same

Question 11

6 bonding, 0 non-bonding

Answer 11

octahedral, nonpolar if all perimeter atoms same

Question 12

5 bonding, 1 non-bonding

Answer 12

square pyramid, polar

Question 13

4 bonding, 2 non-bonding

Answer 13

square planar, nonpolar if all perimeter atoms same

Question 14

which compounds do lewis structures apply to

Answer 14

covalent

Question 15

Steps to create a lewis structure

Answer 15

1) add up valence electrons
2) determine which element is central (carbon is always central, usually least electronegative and first in formula)
3) arrange the atoms around central with single bonds
4) add up bonding electrons and subtract from step 1
5) add remaining electrons as non bonding so each atom has a formal charge of 0
It is possible to have more than one lewis structure, but whichever one has a formal charge of zero is more stable and the correct one