lewis dot structure

According to the octet rule most elements need _______ valence electrons.

• 2
• 8
• 6
• 18

In the correct Lewis structure for water, how many unshared pairs of electrons will oxygen have?

• 1
• 4
• 3
• 2

What is the first thing you need to do when drawing Lewis Structures?

• Draw your bonds
• Count the number of valence electrons
• Subtract to make the valence number even
• Add to make the valence number even

After drawing in your bonds, what do you do if you don't have enough electrons to get each atom to its octet?

• Place dots until everything has eight
• Place dots only around the terminal atoms
• Add a multiple bond
• Have eight only around the central atom

Hydrogen needs _____ electrons in its valence shell to be stable.

• 4
• 6
• 8
• 2

What is the correct Lewis Dot Structure for ammonia NH3

• 
• 
• 
• 

How many electrons does each line indicate are shared?

• 1
• 2
• 3
• 4

Which Lewis Dot Model drawing correctly shows an O₂ molecule?

• 
• 
• 
• 

Why is this Lewis Structure incorrect? Choose all that apply.

• There are too many bonds around Si.

• There should only be single bonds in this Lewis Structure.

• The Structure is missing a triple bond.

• Chlorine only has 6 electrons surrounding it.

Which of the following is the correct Lewis dot structure for the molecule fluorine (F₂)?

• A
• B
• C
• D