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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.
What else can I help you with?
Melting points and boiling points of Group 1 elements?
There are 6 elements of the group 2 elements and all of them have relatively similar melting points. All of these 6 elements are solids and have quite a high melting point but the average from all 6 of them is around 900 degrees Celsius. At around this temperature, most of the elements will start to melt.
What is the trend in melting points as you go down the group of halogens?
The trend in melting points as you go down the group of halogens is that they generally increase. This is due to the increasing number of electrons and atomic size which results in stronger van der Waals forces between the atoms, leading to higher melting points.
Explain how the trends in melting point and boiling point differ from the other periodic trends?
Melting and boiling points are not as straightforward to predict based on periodic trends as properties like atomic size or ionization energy. They are influenced by various factors such as intermolecular forces, molecular weight, and molecular structure. While general trends can be observed within a group or period, there are often exceptions due to these complex interactions.
What are the properties and characteristics of the alkali metals and noble gases on the periodic table?
Alkali metals are found in Group 1 of the periodic table and are highly reactive, soft metals that easily lose electrons. They have low melting and boiling points. Noble gases are in Group 18 and are non-reactive, colorless gases with low boiling points. They have full outer electron shells, making them stable and unreactive.
Do all metals have high melting points?
Very high. For example, sodium (Na) has a boiling point of 883 degrees C, and iron has a boiling point of 2750.0 degrees C, and gold has a boiling point of 2600 degrees C. You can probably find a Period Table that includes the boiling points of all the elements and much more information.
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.
Explain whyIn Group 17 HF has abnormally high melting and boiling points as compared to other hydrides of the group?
Hydrogen bonding.
How melting and boiling point varied in a period?
Generally melting point and boiling point increase up to group 6 and then decrease.
Melting points and boiling points of Group 1 elements?
There are 6 elements of the group 2 elements and all of them have relatively similar melting points. All of these 6 elements are solids and have quite a high melting point but the average from all 6 of them is around 900 degrees Celsius. At around this temperature, most of the elements will start to melt.
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.
What is the phase at STP for group 1?
At standard temperature and pressure (STP), group 1 elements such as lithium, sodium, and potassium are solids. They exist as soft, shiny metals that have low melting and boiling points.
Do group one metals have a high melting point?
No. Group 1 metals (commonly called the alkali metals) have low melting points.
Why alkali metals have low melting and boiling points?
All alkali metals are found to be very soft and they have low melting and boiling points. Alkali metals have low binding energy in the metal crystal lattice as these atoms have only one valence electron. This results in the formation of metallic bonds which are not very strong. Also, alkali metals melting and boiling points decrease down the group.
Are the elements in the boron group high-melting?
It varies. Boron and thallium both have relatively high melting points while gallium and indium have very low melting points.
Melting points of alkali metals?
Alkali metals have relatively low melting points compared to the other metals. Their exact melting points depend on the element itself. But it would be useful to note that their melting points decreases down group I.
What is the trend in melting points as you go down the group of halogens?
The trend in melting points as you go down the group of halogens is that they generally increase. This is due to the increasing number of electrons and atomic size which results in stronger van der Waals forces between the atoms, leading to higher melting points.
What are two prperties of the halogens?
They have low melting and boiling points which increases down the group. They form diatomic molecules They form simple ions with -1 charge They react with hydrogen to form acidic compound
