Chemical Bonds and Lewis Structure

Question 1

What type of bond is formed when the resultant electronegativity is > 2.0?

Answer 1

Ionic

Question 2

What type of bond is formed when the resultant electronegativity is 0.5-2.0?

Answer 2

POLAR Covalent

Question 3

What type of bond is formed when the resultant electronegativity is < 0.5?

Answer 3

NON-POLAR Covalent

Question 4

A bond formed by the complete transfer of electrons between a METAL & NON-METAL

Answer 4

Ionic

Question 5

A bond formed by an UNEQUAL sharing of electrons between TWO DIFFERENT NON-METALS

Answer 5

Covalent - POLAR

Question 6

A bond formed by an EQUAL sharing of electrons between TWO IDENTICAL NON-METALS

Answer 6

Covalent - NON-POLAR

Question 7

What is the charge in a NON-POLAR covalent bond?

Answer 7

No charge

Question 8

What is the ionic charge in an IONIC bond?

Answer 8

Full ionic charge

Question 9

What type of charge does a POLAR covalent bond have?

Answer 9

Partial ionic charge

Question 10

Which electrons are responsible for bond formation among elements?

Answer 10

Bonding electrons

Question 11

What symbol represents the pair of bonding electrons in a Lewis structure?

Answer 11

Line

Question 12

These are the non-bonding electrons that do not form a chemical bond but are still included in writing the Lewis structure of a substance

Answer 12

Lone pairs

Question 13

What are the steps in writing the Lewis structure of a substance?

Answer 13

1. Know the central atom (the LEAST electronegative element in the formula)
2. Calculate the total number of electrons (sum of (number of atoms x valence electron) of each element in the formula)
3. Identify the bonding electrons from the total number

Question 14

It states that an element either
needs to lose or gain electrons to possess
8 electrons in its valence shell to get a
noble gas configuration

Answer 14

Octet rule

Question 15

How do you calculate the formal charge?

Answer 15

GROUP # – (1/2)(B.E) – (N.B.E)