Match the elements given in Column I with the colour they impart to the flame given in Column II- beginarray c - c Whine Column I - Column IINhlineA- Cs - 1- Apple greenllB- Na - 2- VioletllC- K - 3-Brick redllD- Ca - 4-YellowllE- Sr - 5- Crimson redF- Ba - 6- Blue- Illhline array

[ Column I amp; Column II; (A). Cs amp; (6). Blue; (B). Na amp; (4).Yellow; ...

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Byju's Answer

Standard XII

Chemistry

Reactivity with Air CO2 and Water (Group 1)

Match the ele...

Question

Match the elements given in Column I with the colour they impart to the flame given in Column II.
$\begin{matrix} C o l u m n I & C o l u m n I I A . C s & 1. A p p l e g r e e n B . N a & 2. V i o l e t C . K & 3. B r i c k r e d D . C a & 4. Y e l l o w E . S r & 5. C r i m s o n r e d F . B a & 6. B l u e . \end{matrix}$

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Solution

$\begin{matrix} C o l u m n I & C o l u m n I I (A) . C s & (6) . B l u e (B) . N a & (4) . Y e l l o w (C) . K & (2) . V i o l e t (D) . C a & (3) . B r i c k r e d (E) . S r & (5) . C r i m s o n r e d (F) . B a & (1) . A p p l e g r e e n . \end{matrix}$

Flame colours are produced from the movement fo the electrons in the metal ions present in the compounds. These movements of electrons (electronic excitation de- excitation) requires energy
Each atom has a particular energy gap between the ground and excited energy level, therefore, each of these movement involves a specific amount of energy emitted as light energy, and each corresponds to a particular colour . As we know the energy gap between the ground and excited state energy level increases wavelength fo decreases and the complemently colour is observed as a result.

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Similar questions

Q. Match the column I with column II and mark the appropriate choice.

	Column I		Column II
(A)	$N a$	(i)	Crimson red
(B)	$K$	(ii)	Yellow
(C)	$S r$	(iii)	Apple green
(D)	$B a$	(iv)	Violet

Question 20

Match the objects given in Column I with the materials given in Column II.

$\begin{matrix} Column I & Column II (a) & Surgical instruments & (i) & Plastic (b) & Newspaper & (ii) & Animal product (c) & Electrical switches & (iii) & Steel (d) & Wool & (iv) & Plant product \end{matrix}$

Q. Match the increasing orders given in column I with the property(ies) given in column II.

Column I	Column II
(A) $N a^{+} < F^{-} < O^{2 -} < N^{3 -}$	(p) electronegativity
(B) $L i^{+}$ < $N a^{+}$ < $K^{+}$ < $R b^{+}$ < $C s^{+}$	(q) Ionisation energy
(C) $O < S < F < C l$	(r) Size
(D) $C l^{-} < K^{+} < C a^{2 +} < S c^{3 +}$	(s) Electron affinity

Match the elements given in columb I with the propertie mentioned in Column II.
$\begin{matrix} C o l u m n I & C o l u m n I I A . L i & 1. I n s o l u b l e! s u l p h a t e B . N a & 2. S t r o n g e s t m o n o a c i d i c b a s e C . C a & 3. M o s t n e g a t i v e E^{⊝} v a l u e a m o n g a l k a l i D . B a & 4. I n s o l u b l e o x a l a t e 5. 6 s^{2} O u t e r e l e c t r o n i c c o n f i g u r a t i o n \end{matrix}$

Q. Match the chlorides given in figure above with the colour they impart on ignition in flame:

	Salt		Colour
1.	$C a C l_{2}$	(A)	Apple green
2.	$S r C l_{2}$	(B)	Brick red
3.	$B a C l_{2}$	(C)	Crimson red

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Match the elements given in Column I with the colour they impart to the flame given in Column II. ColumnIColumnIIA.Cs1.Apple greenB.Na2.VioletC.K3.Brick redD.Ca4.YellowE.Sr5.Crimson redF.Ba6.Blue.