Single Choice

The metal which gives brick red colour in flame test is :

Abarium
Bcalcium
Correct Answer
Cstrontium
Dradium

Solution

Calcium metal gives brick red color in flame. It is due to the excitation of electrons by the thermal energy which is then followed by de-excitation of an electron to ground state along with the liberation of light in the visible range.

SIMILAR QUESTIONS

s - block Elements (Alkali and Alkaline Earth Metals)

The position in the periodic table to which the following metal belong : Mg - an alkaline earth metal belongs to _________ .

s - block Elements (Alkali and Alkaline Earth Metals)

Identify the following substances which are underlined: An alkaline gas which produces dense white fumes when reacted with hydrogen chloride gas.

s - block Elements (Alkali and Alkaline Earth Metals)

The element that does NOT form acidic oxide is :

s - block Elements (Alkali and Alkaline Earth Metals)

The decreasing order of the second ionization potential of $$Mg,\ Ca$$ and $$Ba$$ is:

s - block Elements (Alkali and Alkaline Earth Metals)

Choose the correct answer form the alternatives given. When alkaline earth metals dissolve in ammonia, they form coloured solution like alkali metals . Which of the following observations regarding the reaction are correct? (i) Dilute solution are bright blue in colour due to solvated electrons. (ii) These solutions decompose to form amides and hydrogen. (iii) From this solution the ammoniates $$[M(NH_3)_6]^{2+}$$ can be recovered by evaporation.

s - block Elements (Alkali and Alkaline Earth Metals)

The pair of amphoteric oxides is:

s - block Elements (Alkali and Alkaline Earth Metals)

Which is the correct sequence of solubility of carbonates of alkaline earth metals?

s - block Elements (Alkali and Alkaline Earth Metals)

Choose the correct answer form the alternatives given. Which of the following compounds are not arranged in correct order as indicated?

s - block Elements (Alkali and Alkaline Earth Metals)

Sulphates of Be and Mg are readily soluble in water but sulphates of Ca, Sr and Ba are insoluble. This is due to the fact that:

s - block Elements (Alkali and Alkaline Earth Metals)

Name two elements you would expect to show chemical reactions similar to calcium. What is the basis of your choice ?

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