Molecular Structure

Oxygen O,

Nitrogen N, and

Carbon C,

can bond how many times each?

• 1 , 2, 3

• 2, 4, 3

• 2, 3, 4

• 3, 4, 5

What two types of atoms make a covalent bond?

• 2 Nonmetals
• 1 Nonmetal and 1 Metal
• 2 Metals
• 2 Noble Gases

What happens to electrons in a covalent bond?

• Electrons are given to other atoms

• Electrons are taken by other atoms

• Electrons disapppear

• Electrons are shared between atoms

The octet rule says that all atoms will bond to have _____ electrons, except for H which will have ____ electrons.

• 8 , 2

• 7 , 2

• 8 , 1

• 5, 1

Why do nonmetal atoms share electrons so that they will have 8 or 2 valence electrons?

• 8 is the coolest number.

• They don't end up with 8 valence electrons.

• 2 valence electrons make them stable like the alkaline earth metals.

• That is a full valence shell which makes them stable like the noble gases.

• 6

• 1

• 12

How many different elements are present in H₂COCH₂

• 5

• 4

• 3

• 2

What type of diagram is this?

• Molecular formula

• Structural formula

• Ionic formula

• Lewis Dot Structure

Which of these structural formulas are incorrect?

• a and c

• b and e

• b and d

• c and e

What is wrong with drawings b and d?

• Carbon is bonded the wrong number of times

• Hydrogen and Oxygen are bonded the wrong number of times

• Nitrogen and Oxygen are bonded the wrong number of times

• Carbon and Nitrogen are bonded the wrong number of times