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What type of organic compounds show UV absorption bands?
Aromatic compounds, conjugated dienes, and compounds with extensive pi-electron systems often show UV absorption bands. These compounds have delocalized electrons that can undergo electronic transitions when exposed to ultraviolet light, leading to absorption of UV radiation.
Are actinide and lanthanide series is transition metals?
No, the actinide and lanthanide series are not considered transition metals. Transition metals refer to elements found in the d-block of the periodic table, whereas actinides and lanthanides are part of the f-block. The transition metals are known for their characteristic properties like variable oxidation states and the formation of colored compounds.
Can transition metals be identified by their colors in flame tests?
Yes, transition metals can be identified by their unique colors in flame tests. Each transition metal emits a characteristic color when exposed to a flame due to the energy levels of their electrons transitioning. This property is used in qualitative analysis to identify the presence of specific transition metals in a sample.
What change in color is observed when silver chloride is left exposed to sunlight. What type of chemical reaction is this?
This is a photochemical reaction of decomposition: silver (black) is released.
What happened to camphor when exposed to air?
When exposed to air, camphor will slowly sublimate, meaning it will transition from a solid to a gas without passing through a liquid phase. This process is known as volatilization, and it causes the camphor to gradually evaporate and disperse into the surrounding environment.
What is observed when copper sulphatepentahydrate is exposed to ammonia gas?
A chemical reaction is observed.
How does rust get its reddish color?
The electronic structure of the iron ions that are contained in it. Iron is a transition metal, and transition metal compounds tend to be highly colored because they have absorption bands in the visible spectrum.
What transition metal rusts when exposed to oxygen?
Iron is the transition metal that rusts when exposed to oxygen, forming iron oxide.
What type of organic compounds show UV absorption bands?
Aromatic compounds, conjugated dienes, and compounds with extensive pi-electron systems often show UV absorption bands. These compounds have delocalized electrons that can undergo electronic transitions when exposed to ultraviolet light, leading to absorption of UV radiation.
What part of the skin is observed in an annual physical?
The exposed areas of the skin are observed; the size and shape of any lesions are noted
What are the effects of a electronic device exposed to magnets?
electronic devices that get too close to magnets, can stop working properly.
How many hours of electronic media are children exposed to in a day?
3
What observation caused Becquerel to pose another question?
he
Are actinide and lanthanide series is transition metals?
No, the actinide and lanthanide series are not considered transition metals. Transition metals refer to elements found in the d-block of the periodic table, whereas actinides and lanthanides are part of the f-block. The transition metals are known for their characteristic properties like variable oxidation states and the formation of colored compounds.
Does water damage router?
Definitely, electronic devices should never be exposed to water!
A type of pollution that forms when nitrogen and carbon compounds are exposed to sunlight is called?
photochemical smog
Why does a lemon become bitter from sour when it comes in contact with air?
When a lemon is exposed to air, it undergoes oxidation of its compounds. This oxidation can convert the sour citric acid in lemons into bitter compounds. This is why a lemon can sometimes taste bitter when it has been cut and exposed to air for a period of time.
