Characteristics
Shape
Lewis Diagram
Intermolecular Forces
Use in our Daily Lives
100
In the ionic compound Lithium Iodide, how many energy shells/orbitals and protons does each atoms contain?
Lithium contains one energy shell and three protons in total while iodine has five energy shells and fifty-three protons in total.
100
All chemical compounds create a specific shape for us to categorize which type of compound it is. What shape do ionic compounds like lithium iodide create ?
Ionic compounds create shapes called crystal lattices because of the electrostatic force of attraction that exist between the cations.
100
What is the lewis dot diagrams of the ionic compound, Lithium Iodide ?
100
What type of intermolecular forces does the molecular compound Octane contain ?
The only intermolecular force that octane contains is London dispersion forces hence the fact that all molecular compounds have this type of attraction between their electrons.
100
What is Lithium Iodide ?
200
What is the solubility, boiling point, melting point appearance, reactivity, and rigidity of Lithium Iodide ?
- Lithium Iodide is soluble in ethanol, propanol, ethanediol, and ammonia.
- The boiling point is 1,171 degrees Celsius and the melting point is 469 degrees Celsius .
- The appearance of Lithium Iodide is said to be a white crystalline solid. When its exposed to air, it becomes yellow in colour, due to the oxidation of iodide to iodine.
- Lithium Iodide is very reactive due to the reaction of lithium which is a part of the Alkali metals and iodine, a part of the halogens.
- It is said that the rigidity in a solid compound is very high, hence the fact that Lithium Iodide has high rigidity.
200
All chemical compounds create shapes so that we are able to identify which type of compound it is. What shapes do molecular compounds like octane create ?
Molecular compounds create a type of stereochemical shape called a tetrahedral. Tetrahedral's have one central atom and four other peripheral atoms around it.
200
What is the lewis dot diagram of the molecular compound, Octane ?
200
To prove your understanding of intermolecular forces, explain why the compound Octane does not contain dipole-dipole forces.
To start off, octane has a tetrahedral shape. We know that compounds that have tetrahedral shape are non polar because of the fact that their shape has symmetry. As for the compound octane not having dipole-dipole forces, it makes sense because only polar compounds can have this attraction of dipoles.
200
What is Octane? (or also known as Octane Rating)
300
We know that Octane has a tetrahedral VSEPR shape. How far away are the peripheral atoms away from each other?
300
Show us your full understanding by drawing the proper structure of the ionic compound Lithium Iodide?
300
In a lewis dot diagram of the ionic compound Lithium Iodide, do we show the sharing of electrons or the transfer of electrons ?
In ionic compounds like Lithium Iodide, we show the the transfer of electrons because a lithium is giving up its electron to a non metal, iodine.
300
To prove your understanding, explain why the molecular compound octane does not contain hydrogen bonds even though it has hydrogen in its chemical formula.
Even though Octane has eighteen hydrogens, it does not have any hydrogen bonds. According to hydrogen bonds, there are two conditions they must follow for a compound to have hydrogen bonding which are: The atoms must have a much higher electronegativity than hydrogen and it must have at least one lone pair.
300
What do we use Lithium Iodide for?
Lithium Iodide is used as an electrolyte for high-temp batteries. It is also required for long life batteries in devices such as a pacemaker. This device uses electrical impulses delivered by electrodes contracting the heart muscles to regulate the beating of the heart. Its also used as a phosphor, a substance that exhibits the idea of luminescence for neutron detection.
400
Explain the electronegativity and shielding of the ionic compound, lithium iodide.
- We already know that Lithium Iodide is a ionic compound, but to prove this we can use its electronegativity. Iodine has a electronegativity of 2.7 while lithium is 1.0. Once you subtract them, the number is 1.7, and from our knowledge we know that any number greater or equal to 1.7 is a ionic compound.
- As for the shielding of Lithium Iodide, because of lithium giving iodine its electron, it creates a a full octet on the fifth orbital of iodine. This creates a bigger radius for iodine which results in many orbitals which reduces the electron attraction from the nucleus.
400
Show us your full understanding by drawing the proper structure of the molecular compound Octane.
As for Octane, it has many structural bonding patterns and atomic organization that differ by the amount and location of branching in the carbon chain.
400
In a Lewis dot diagram of the molecular compound Octane, do we show the sharing of electrons or the transfer of electrons?
In molecular compounds like Octane, we show the sharing of electrons because there are two non metals, Carbon and Hydrogen sharing their electrons.
400
What intermolecular forces does the ionic compound Lithium Iodide contain?
This is wrong! Intermolecular forces are only for molecular compounds not IONIC compounds.
400
What do we use Octane for ?
Octane comes from the word "Octane Rating". Your are probably very familiar with this if you fill your parents car up with gas or perhaps your own. The octane rating of gasoline tells you how much the air-fuel mixture can be compressed before it ignites in a vehicle. Many people think octane enhances explosions in the cylinder, but all it really does is prevent the air-fuel mixture from igniting before the spark plug does it.