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Bonding and Polarity (#1 and #2 combined - no organic)

Last updated about 1 year ago

15 questions

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Question 15

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The chemical bonding in the following molecule is  best described as ...

ionic

polar covalent

non-polar covalent

metallic

The following molecule is  best described as ...

non-polar 

polar 

The polarity of a bond between two elements can be best determined by

The difference in electronegativity between the elements

The difference in atomic radius between the elements

The number of electrons shared in the bond

The difference in charge distribution between the elements

In the diagram shown, what is the total number of electrons shared in the bond between the two carbon atoms?

2

4

6

8

Which one of the following is a polar molecule?

CCl4

CO2

H2S

H2

A type of bond that results from the equal sharing of electrons is a		

none of these options apply

non-polar covalent bond

polar covalent bond

ionic bond

Which ONE of these is a non-polar covalent compound with polar covalent bonds?

MgCl2

Cl2

H2O

CH4

HCl

NaF

Which ONE of these is a non-polar covalent compound with non-polar covalent bonds?

HCl

CH4

Cl2

H2O

NaF

MgCl2

This substance's bonding model involves a cation core with a sea of delocalised electrons.

Cl2

CH4

H2O

Ca

NaF

MgCl2

This substance is formed by an electrostatic attraction between ions

MgCl2

H2O

CH4

Na

HF

Cl2

When bonds are formed and broken, energy is .....

Bonds are formed

Bonds are broken

Energy is released by the system

Energy is absorbed by the system

Which bond is the most polar?

H - Cl

H - H

H - I

H - F 

How do you determine which way the dipole arrow points?

Towards the atom that is polar

Towards the less electronegative atom

Towards the more electronegative atom

Towards the atom that has the higher atomic number

Two theoretical elements M and R have different electronegativities. Which of the following arrangements will NOT be a dipole?

They will always form a dipole

A polar covalent molecule that is linear

HCl

Cl2

Ca

NaF

H2O

MgCl2