They are completely different Noble gases are colorless, monoatomic gases; the halogens are diatomic, colored and there form at room temperature is F, gas, Cl, gas, Br, liquid I, solid. Nobel gases are chemically unreactive, helium and neon have no known compounds, a few very reactive compounds are known for the rest. The halogens are all reactive, fluoringe is the most reactive. One or more of the halogens will form compounds with all of the other elements apart from the noble gases. (apart from He and Ne)
Halogens are highly reactive elements because they have seven valence electrons and are only one electron away from achieving a stable electron configuration like the noble gases. This electronic configuration makes halogens more likely to react with noble gases to gain that missing electron and achieve stability by forming compounds.
Alkali metals from group 1 are very reactive and can easily react with air or moisture to form compounds. Halogens from group 7 are also highly reactive and tend to form compounds with other elements to satisfy their valence electron configuration. Therefore, it is more common to find them as compounds rather than in their free elemental form.
Sodium is a highly reactive element. When it is in its pure form, it reacts with elements and moisture in the air almost immediately. It is more stable in compounds, so this is how it is found in nature.
Chlorine and fluorine, with fluorine more reactive. Some would also include oxygen. (The two remaining halogens are not gaseous at room temperature.)
If they are more reactive, I would speculate it is due to their differences in electronegativities. The greater the difference, the more stable the compound. Electronegativities decrease as you go from F to I. For example, ClF3 reacts more violently than F2, yet IF7 is chemically inert. http://en.wikipedia.org/wiki/Interhalogen
They are completely different Noble gases are colorless, monoatomic gases; the halogens are diatomic, colored and there form at room temperature is F, gas, Cl, gas, Br, liquid I, solid. Nobel gases are chemically unreactive, helium and neon have no known compounds, a few very reactive compounds are known for the rest. The halogens are all reactive, fluoringe is the most reactive. One or more of the halogens will form compounds with all of the other elements apart from the noble gases. (apart from He and Ne)
No. More reactive halogens will replace less reactive ones in a compound. This is because a more reactive halogen is more stable in a compound relative to a less reactive one, while a less reactive halogen is relatively more stable in its elemental form.
Halogens are generally more reactive than actinides. Halogens are a group of elements known for their high reactivity due to their ability to easily gain an electron and form negative ions. Actinides, on the other hand, are a series of radioactive elements that tend to be less reactive overall.
All halogens are soluble in chlorinated hydrocarbons like dichloromethane. Since the halogens can interchange, the reaction will be determined by electronegativity. The more electronegative, or less reactive halogen, will be isolated.
The relationship between halogen nucleophilicity and the reactivity of organic compounds is that halogens with higher nucleophilicity are more reactive in organic reactions. This is because nucleophilic halogens are better able to donate electrons and participate in chemical reactions, leading to increased reactivity in organic compounds.
Halogens are highly reactive elements because they have seven valence electrons and are only one electron away from achieving a stable electron configuration like the noble gases. This electronic configuration makes halogens more likely to react with noble gases to gain that missing electron and achieve stability by forming compounds.
Alkali metals from group 1 are very reactive and can easily react with air or moisture to form compounds. Halogens from group 7 are also highly reactive and tend to form compounds with other elements to satisfy their valence electron configuration. Therefore, it is more common to find them as compounds rather than in their free elemental form.
Sodium is a highly reactive element. When it is in its pure form, it reacts with elements and moisture in the air almost immediately. It is more stable in compounds, so this is how it is found in nature.
Halogens become less reactive as you go down the group. This is because atomic size increases down the group, making it more difficult for the larger atoms to gain electrons and react with other substances. Conversely, smaller halogen atoms are more reactive because they can more easily gain electrons and form bonds with other elements.
Silicon is considered to be a relatively reactive element. It reacts with oxygen to form silicon dioxide (silica) and can also react with certain metals and nonmetals to form various compounds. However, silicon is more stable and less reactive compared to some other elements like alkali metals or halogens.
Chlorine and fluorine, with fluorine more reactive. Some would also include oxygen. (The two remaining halogens are not gaseous at room temperature.)