Unit 3b

Question 1

Why do atoms participate in bonding?

Answer 1

to obtain the desired 8 valence electrons

Question 2

What type of bond occurs when one atom transfers valence electrons to another atom?

Answer 2

Ionic bond

Question 3

What type of bond occurs when one atom shares valence electrons with another atom?

Answer 3

covalent

Question 4

When do you use roman numerals?

Answer 4

with transition metals

Question 5

Linear

Answer 5

180 degrees
CO2 & HBr

Question 6

Bent

Answer 6

104.5
2 bonds and 2 lone pairs
H2O

Question 7

Trigonal planar

Answer 7

120
3 bonds and 0 lone pairs
BF3

Question 8

Trigonal pyramidal

Answer 8

107
3 bonds and 1 lone pair
NH3

Question 9

Tetrahedral

Answer 9

109.5
4 bonds and 0 lone pairs
CH4

Question 10

Nonpolar covalent bonds

Answer 10

0 - 0.5

Question 11

Polar covalent bonds

Answer 11

0.5 - 1.9

Question 12

Ionic bonds

Answer 12

2 - 4

Question 13

Linear polarity

Answer 13

nonpolar

Question 14

Bent polarity

Answer 14

polar

Question 15

Trigonal planar polarity

Answer 15

nonpolar

Question 16

Trigonal pyramidal polarity

Answer 16

polar

Question 17

Tetrahedral polarity

Answer 17

nonpolar

Question 18

Diatomic elements

Answer 18

hydrogen
nitrogen
oxygen
fluorine
chlorine
bromine
iodine

Question 19

electronegativity trend

Answer 19

left to right - increases
top to bottom - decreases

Question 20

Which atom becomes the central atom

Answer 20

the one with the least electronegativity