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As you go down any group in the Periodic Table of elements, you are moving in the direction of heavier elements. And heavier elements within a group are going to boil at higher temperatures than lighter elements, because heavier atoms have more inertia, and require more energy in order to give them the amount of random thermal motion needed to form the gas phase.
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what are the changes in the boiling point of water in high air pressure?
When air pressure increases, the boiling point of water also increases. This is because higher air pressure pushes down on the water, making it harder for the water molecules to escape into the gas phase. As a result, more heat is needed to bring the water to its boiling point.
Comment on the trend in the boiling points of the Noble gas elements and why do boiling points vary in this manner.?
The trend in boiling points of Noble gas elements increases down the group, from helium to radon. This is because as you move down the group, the atomic size and London dispersion forces also increase, leading to stronger interatomic forces and higher boiling points. Additionally, the increasing number of electrons in the heavier Noble gases results in more polarizable electron clouds, further contributing to the trend.
What is the trend in melting point and boiling points of the elemets in group 1 and 7?
In Group 1 (alkali metals), the melting and boiling points decrease as you move down the group due to the increase in atomic size and metallic bonding. In Group 7 (halogens), the melting and boiling points increase as you move down the group due to the increase in atomic size and London dispersion forces.
Why does it take the water longer to boil when it has salt in it?
When salt is added to water, it increases the boiling point of the water, requiring it to reach a higher temperature to boil. This is because the salt disrupts the formation of water vapor molecules, which slows down the boiling process.
What is the relationship between melting point and atomic number for group seven elements?
As you move down Group 7 elements (halogens), the melting point generally increases. This is because the atomic number increases down the group, leading to a greater number of electrons and stronger van der Waals forces between the molecules, resulting in higher melting points.
What is group trend of boiling point in IA group?
The boiling point decrease from lithium to caesium.
How do the boiling points of the noble gases change as you go down?
As you go down the group of noble gases, the boiling points generally increase. This is due to the increase in molecular weight and London dispersion forces between the heavier atoms. Helium has the lowest boiling point, while radon has the highest boiling point among the noble gases.
Why boiling point of noble gases increase down in the group?
The melting and boiling points increase down the group because of thevan der Waals forces. The size of the molecules increases down the group. This increase in size means an increase in the strength of the van der Waals forces.
Do the halogens have a higher boiling point going down the group and why is that?
Yes, halogens have a higher boiling point going down the group. This is because the atomic size increases with atomic number, leading to stronger London dispersion forces between molecules as the size increases. Consequently, more energy is required to overcome these forces, resulting in higher boiling points.
How do boiling points of the noble gases change as you go down the group?
The boiling points of noble gases increase as you go down the group. This is because the increase in atomic size and London dispersion forces between atoms result in stronger intermolecular forces, requiring higher temperatures to overcome.
Why boiling point increases from top to bottom in group 8?
This is due to increased london dispersion forces- simply put the more electrons in the atoms the bigger the force - as you go down the group the atomic number increaes and therfore the number of electrons increases..
what are the changes in the boiling point of water in high air pressure?
When air pressure increases, the boiling point of water also increases. This is because higher air pressure pushes down on the water, making it harder for the water molecules to escape into the gas phase. As a result, more heat is needed to bring the water to its boiling point.
How do the boiling points of the noble gases change as you go down the group helium neon argon krypton?
The boiling points of noble gases increase as you go down the group from helium to krypton. This is because the boiling point is influenced by the strength of the London dispersion forces among the atoms, which increases with molecular size. As the atomic size and mass increase down the group, the London dispersion forces also increase, resulting in higher boiling points.
What are the Boiling and Melting Points of alkaline earth metal?
The boiling points of alkaline earth metals generally increase down the group. For example, the boiling point of beryllium is around 2469°C and the boiling point of barium is around 1860°C. The melting points also generally decrease down the group.
Does boiling point of water slow down with salt?
No, adding salt to water increases the boiling point, not slows it down. The presence of salt in water disrupts the formation of hydrogen bonds between water molecules, requiring more energy to overcome these disruptions and reach boiling point.
Comment on the trend in the boiling points of the Noble gas elements and why do boiling points vary in this manner.?
The trend in boiling points of Noble gas elements increases down the group, from helium to radon. This is because as you move down the group, the atomic size and London dispersion forces also increase, leading to stronger interatomic forces and higher boiling points. Additionally, the increasing number of electrons in the heavier Noble gases results in more polarizable electron clouds, further contributing to the trend.
What is the trend in melting point and boiling points of the elemets in group 1 and 7?
In Group 1 (alkali metals), the melting and boiling points decrease as you move down the group due to the increase in atomic size and metallic bonding. In Group 7 (halogens), the melting and boiling points increase as you move down the group due to the increase in atomic size and London dispersion forces.
