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Why the melting points of sodium chloride and iodine are very different?
Wiki User
∙ 11y ago
It has got to do with the intermolecular (forces in between different atoms) forces. Iodine (I2) has weak intermolecular forces in between molecules, called a dispersion force. This force is very weak, resulting in lower boiling and melting temperatures. This happens for all covalent bonded non-metals.
Sodium Chloride, however, has a very strong intermolecular force. This is because they are Ionic (Metal and a Non-Metal). Ionic compounds are like a bar magnet, with the metal (Sodium) as the positive end and the non-metal (Chlorine) as the negative end. These form a 3D lattice Structure (a Cube Structure). The positive ends attract to the negative ends and vice versa.
This strong attraction means that when the substance is heated up, the molecules want to stay together. This results in a higher melting and boiling temperatures.
Note: Ionic forces are about 1000x stronger than dispersion forces
Wiki User
∙ 11y ago
Mbotho Liggy Mbotho ...
Mbotho Liggy Mbotho ...
wow
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How can iodine have a melting point?
All substances have melting points and boiling points. A melting point is merely the temperarture at which it changes from a solid to liquid and vice versa. The boiling point of a substance would be the temperature at which it changes from liquid to gas and vice versa.
Which has higher melting point KCl or HCI?
Melting points: KCl: 770oC HCl: -114.22oC
What are the boiling and melting points of bromine?
Boiling point 58.78°C Melting point 7.2°C
Which type of compound would have the lowest melting point?
Compounds bonded by covalent bonds do not necessarily have low melting points. Some have whereas some don't have.Some polymers and hydrocarbons have very high melting points. But it can be said that they don't have melting points as high as ionic compounds. It is so because ionic bonds are stronger than the covalent bonds.
Does sulfur have a high or low boiling point?
Yes! Its boiling point is 1330oC. All ionic compounds like potassium iodide have relatively high boiling points. To boil them, ionic bonds (the electrostatic attraction between oppositely charged ions) must be broken in order to separate the ions. These bonds are strong so lots of energy is required, hence high boiling points.
What is a property of sodium chloride that is not a property of sodium or chloride?
The melting point of NaCl is very different from the melting points of Na or Cl.
What is the melting and boiling points of magnesium and chloride?
chloride isn't a thing on its own and the melting and boiling points of chlorine and magnesium will have no effect on the boiling and melting point og magnesium chloride.
Why florine gas and iodine is solid?
Difference in melting and boiling points.
What are the melting and boiling points of iodine?
Melting point 113.5°C Boiling point 184.35°C
Why is water lower than the melting point of sodium chloride?
Sodium chloride is a ionic compound. Generally they have high melting points.
Do proteins have definite melting points?
Different proteins have different melting points.
What is the similaritie between diamond and iodine bond?
diamond n iodine have high melting points as they are both ionic compounds
What are the melting and boiling points of sodium cloride?
The melting point of sodium chloride is 801 0C. The boiling point of sodium chloride is 1 413 0C.
What are the melting and boiling points of table salt?
The melting point of sodium chloride is 801 0C. The boiling point of sodium chloride is 1 413 0C.
Effect of impurities on melting point and melting point?
According to RAOULT, when two different metals of different melting points are melted or alloyed there melting points considerably change. So,according to the percentage of impurities, the melting points either increase or decrease.
How do you identify solids at melting or boiling points?
Melting and boiling points are different for each compound or element.
How can iodine have a melting point?
All substances have melting points and boiling points. A melting point is merely the temperarture at which it changes from a solid to liquid and vice versa. The boiling point of a substance would be the temperature at which it changes from liquid to gas and vice versa.
