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when alkali metals are exposed to flame test, the loosely bounde electrons which present in valency shell are excited to higher energy levels, after some time they will come back to ground state by emiiting radiation which falls under visible region gives colour.
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Why the dominant color of a nonluminous flame on a Bunsen burner blue?
The dominant color of a nonluminous flame on a Bunsen burner is blue. Whereas, the dominant color of a luminous flame on a Bunsen burner is orange.
What are characteristics of group 1 metal?
Group 1 metals are alkali metals.Common characteristics are that they are all silvery in color,they're all soft,and each will have a shiny surface when cut.Oxidation will occur with each of them and they'll become dull.Alkali metals include lithium,sodium,rubidium,potassium,francium,and francium.
Why is there a yellow flame on the Bunsen burner?
The yellow color is from the incandescence of not burned soot particles.
Do alkali metals tarnish?
Lithium, Sodium and potassium are all soft metals which can be cut easily with a knife. This freshly cut piece is a shiny silver color which tarnishes quickly to a dull grey as these metals react with the oxygen and water in air. Sodium tarnishes quicker than Lithium and potassium tarnishes quicker than sodium. Thus, Potassium tarnishes quicker than lithium and not the other way around.
When does the flame of a Bunsen burner becomes small or big?
when the flame comes big the color of the flame is orange but, when the flame comes small the color of the flame is blue
Why the dominant color of a nonluminous flame on a Bunsen burner blue?
The dominant color of a nonluminous flame on a Bunsen burner is blue. Whereas, the dominant color of a luminous flame on a Bunsen burner is orange.
What colour do NaCl impart on heating?
The color remain unchanged.
Are the waves produced by the magnesium ion flame test of a higher or a lower frequency than the visible spectrum?
For the alkali metals, higher atomic number results in a lower wavelength flame test color. If the alkali earth metals follow the same trend then magnesium should have a higher wavelength (LOWER FREQUENCY) than the visible spectrum.
What color are main group metals as solids and in solution?
Main group metals are generally a silvery color and caesium has a goldy tinge. In aqueous solution they are all colorless. (In this respect they can be contrasted to the metals copper, gold which are very colored in the metallic state- and with transition metals in aqueous solution which can often be colored where they have have d electrons that can be excited by light leading to absorption of some frequancies giving a color. Alkali metals (sodium, potassium etc in group 1) dissolve in liquid ammonia to give an intense bright blue color- due to ionisation and relase of an electron into solution.
What color flame is the hottest on a Bunsen burner?
Blue/Turqouise
Is yellow the hottest color on a Bunsen burner?
no, the blue flame is hottest
What are the colours of the alkali metal ions respectively?
They do not have color.
What is the color of a roaring flame on a Bunsen burner?
the colour of the roaring flame is blue
What are characteristics of group 1 metal?
Group 1 metals are alkali metals.Common characteristics are that they are all silvery in color,they're all soft,and each will have a shiny surface when cut.Oxidation will occur with each of them and they'll become dull.Alkali metals include lithium,sodium,rubidium,potassium,francium,and francium.
What color would universal indicator in strong alkali?
red
What color did universal indicator if it is added to weak alkali?
blue
What color does onion skin turn in acid and alkali?
hi
