Chemical Bonding

Question 1

Atoms are being held by electrical attraction between species of opposite charge.
Atoms form bonds to completely fill their valence shells.

Answer 1

Dualism (Berzelius)

Question 2

There are two ways by which
an atom bonds with another atom

Answer 2

1. by gaining or losing electrons forming ionic bond
2. sharing of electrons with another atom forming covalent bond

Question 3

1. by gaining or losing electrons

Answer 3

forming ionic bond

Question 4

2. sharing of electrons with another atom

Answer 4

forming covalent bond

Question 5

Atoms with high ionization energy tend to _________ easily while atoms with low
electron affinity tend to ________ easily.

Answer 5

lose electrons , gain electrons

Question 6

Atoms forming ________ share electrons to acquire the configuration of the
noble gases (octet rule).

Answer 6

Covalent bond

Question 7

Hydrogen acquires the electron configuration of the noble gas ___________

Answer 7

helium

Question 8

Formal Charge equation

Answer 8

group number - (1/2 shared e-) - number of unshared e

Question 9

What is the 1st step in writing Lewis Structures

Answer 9

Determine the total number of valence electrons of all atoms (also equal to their
group number) = n

Question 10

number of electrons located at the outermost shell of an atom

Answer 10

valence electron

Question 11

What is the 2nd step in writing Lewis Structures

Answer 11

Determine the total number of electrons for each atom that will satisfy the octet
rule = m

Question 12

What is the 3rd step in writing Lewis Structures

Answer 12

The number of bonding electrons is m-n

Question 13

What is the 4th step in writing Lewis Structures

Answer 13

The number of electron - pair bonds is ½ (m-n)

Question 14

What is the 5th step in writing Lewis Structures

Answer 14

Assign the correct formal charge for each atom

Question 15

A molecule or an ion represented in two or more Lewis structures that differ only in the positions of electrons exhibit the property of resonance.

Answer 15

Resonance Theory

Question 16

A molecule or an ion represented in two or more Lewis structures that differ only in the positions of electrons exhibit the property of resonance. These structures are called

Answer 16

resonating structures or resonating contributors

Question 17

if an electron moves unexpectedly inside the matter without compromising the stability

Answer 17

Resonance

Question 18

two types of covalent bond

Answer 18

sigma and pi bonds

Question 19

the spaces where the probability of finding electron is highest (as it moves unexpectedly)

Answer 19

atomic orbitals

Question 20

when atomic orbitals overlap side by side

Answer 20

pi bonds

Question 21

when atomic orbitals overlap head by head

Answer 21

sigma bonds