Question

Consider the Lewis structure of aminomethanol (NH2CH2OH) below, for each chemical bond in the table, determine the type of the chemical bond and bond polarity

Answer choices for each:

Pure nonpolar covalent bond or polar covalent and the partial negative charge is on the _____

1) N―H

2) N―C

3) C―H

4) C―O

5) O―H

Answer 1

when electro negativity difference[EN] between atoms is less than 0.4 ,the bond
is covalent
when it is between 0.4 and 2 , the bond is polar covalent. The element with
higher electro negativity will get partial negative charge

1) N―H
EN difference = 3.04 -2.2
0.84
polar covalent, N gets partial negative charge

2) N―C
EN difference =3.04-2.55 = 0.49
polar covalent, N gets partial negative charge
3) C―H
EN difference = 2.55-2.2=0.35
non polar covalent bond
4) C―O
EN difference =3.44- 2.55 =0.89
polar covalent bond, O gets partial negative charge
5) O―H
EN difference = 3.44 -2.2 = 1.24
polar covalent bond, O gets partial negative charge