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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
What else can I help you with?
How do you obtain iodine from a mixture of sodium chloride and iodine?
Iodine is not soluble in water but soluble in organic solvents; sodium chloride is soluble in water. Method 1: dissolving of the mixture in water, filtering, washing of the filter, recovery of iodine from the filter Method 2: dissolving of the mixture in chloroform, filtering, recovery of iodine from the solution by air evaporation at room temperature
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.
Why does calcium oxide and sodium chloride have different melting points?
Calcium oxide (CaO) and sodium chloride (NaCl) have different melting points due to differences in their bonding structures. Calcium oxide has an ionic bond, where calcium ions are attracted to oxide ions, requiring more energy to break these strong bonds compared to the ionic bonds in sodium chloride. Sodium chloride has a higher melting point due to its stronger ionic bonds and the smaller size of the chloride ion compared to the oxide ion in calcium oxide.
Do All minerals have the same melting point True of False?
False, all minerals DO NOT have the same melting point
Which has higher melting point KCl or HCI?
KCl (potassium chloride) has a higher melting point compared to HCl (hydrogen chloride). This is because KCl is an ionic compound with strong electrostatic forces between ions, whereas HCl is a covalent molecule with weaker intermolecular forces.
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.
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
Do proteins have definite melting points?
Different proteins have different melting points.
Why is water lower than the melting point of sodium chloride?
Sodium chloride is a ionic compound. Generally they have high melting points.
How do you obtain iodine from a mixture of sodium chloride and iodine?
Iodine is not soluble in water but soluble in organic solvents; sodium chloride is soluble in water. Method 1: dissolving of the mixture in water, filtering, washing of the filter, recovery of iodine from the filter Method 2: dissolving of the mixture in chloroform, filtering, recovery of iodine from the solution by air evaporation at room temperature
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.
Do the halogens have a high or low melting points?
They have low melting points and high reactivity.
What are the 2 halogens with the highest melting points?
Melting points increase with atomic weight for elemental halogens (the second-most right column in a periodic table). The heavier the atom, the harder to turn it into a liquid. The lightest halogens, such as Florine (F) and Chlorine (Cl) are gasses at room temperature, having "melted" and "boiled" at lower (colder) temperatures. The two heaviest halogens are Iodine (I) and Astatine (At). Astatine is very rare, but Iodine is common and is a solid at room temperature. The have the highest melting points of halogens. Remember, F down to At increase in melting points. F and Cl are gases, so they have low melting point. Br is a liquid, so it has a higher melting point. I and At are solids so it takes more heat to melt them.
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.
Why different fats have different melting points?
different levels of saturation, the more saturated the higher the melting point.
