Home
Class 12
CHEMISTRY
The metal that produces red-violet colou...

The metal that produces red-violet colour in the non-luminous flame is

A

Ba

B

Ag

C

Rb

D

Pb

Text Solution

Verified by Experts

The correct Answer is:
C
Alkali metals and their salts impart a characteristic colour to flame. The reason for flame colouration is that the energy of the flame causes an excitation of the outermost electrons which when return to their original position, give out the energy so absorbed in the visible region. Thus, Rb gives a red-violet colour to the flame.
Doubtnut Promotions Banner Mobile Dark
|

Similar Questions

Explore conceptually related problems

The pigment that give. red colour to blood is

The alkali metals and their salts impart characteristic colour to an oxidising flame.Name the alkali metal which imparts crimson red colour to the oxidizing flame.

Knowledge Check

  • The salt of an alkali metal gives violet colour in the flame test. Its aqueous solution gives a white precipitate with barium chloride in hydrochloric acid medium. The salt is

    A
    `K _(2) SO _(4)`
    B
    `KCl`
    C
    `Na _(2) SO _(4)`
    D
    `K_(2)CO_(3)`

  • Sodium chloride imparts a golden yellow colour to the Bunsen flame. This can be interpreted due to:

    A
    low ionization potential of sodium
    B
    photosensitivity of sodium
    C
    sublimation of metallic sodium to give yellow vapour
    D
    emission of excess of energy absorbed as a radiation in the visible region.

  • Sodium chloride imparts a golden yellow colour to the Bunsen flame. This can be interpreted due to:

    A
    low ionization potential of sodium
    B
    photosensitivity of sodium
    C
    sublimation of metallic sodium to give yellow vapour
    D
    emission of excess of energy absorbed as a radiation in the visible region.

    • Similar Questions

    Explore conceptually related problems

    Alkali metals show characteristic flame colouration. The flame colour of Li are crimson red while that of K is violet. How will you account for this?

    The alkali metals and their salts impart characteristic colour to an oxidising flame.What is the reason for this?

    The salt of an alkali metal gives yellow colour in the flame test. Also its aqueous solution gives an insoluble white precipitate with barium chloride in acid medium. The salt is

    The salt of an alkali metal gives yellow colour in the flame test. Also its aqueous solution gives an insoluble white precipitate with barium chloride in acid medium. The salt is

    In certain plant species, red flower colour is incompletely dominant to white flower colour (the heterozygote is pink) and tall stems are completely dominant to dwarf stern. If a tall pink plant (TtRr) is crossed with a tall white plant (TTrr). which one of the following type of plants would be produced in the offsprings

    Home
    Profile