Which of the following salt gives a crimson red colour in flame test?

B a C l_{2}

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C a C l_{2}

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B e C l_{2}

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S r C l_{2}

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Solution

The correct option is B $S r C l_{2}$
Strontium chloride( $S r C l_{2}$ ) gives crimson red colour in the flame test. It is due to the excitation of electrons by the thermal energy, which is then followed by de-excitation of electron to ground state along with liberation of light in the visible range.

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Similar questions

R a C l_{2} < B a C l_{2} < S r C l_{2} < C a C l_{2} < M g C l_{2} < B e C l_{2}

B e C l_{2} < M g C l_{2} < C a C l_{2} < S r C l_{2} < B a C l_{2} < R a C l_{2}

R a C l_{2} < B a C l_{2} < S r C l_{2} < C a C l_{2} < M g C l_{2} < B e C l_{2}

R a C l_{2} < B a C l_{2} < S r C l_{2} < C a C l_{2} < M g C l_{2} < B e C l_{2}

B e C l_{2}, S r C l_{2}, M g C l_{2}, C a C l_{2}, B a C l_{2}

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