Single Choice

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

A$$Mg > Ca > Ba$$
Correct Answer
B$$Ca > Ba > Mg$$
C$$Ba > Mg > Ca$$
D$$Mg > Ba > Ca$$

Solution

The ionization potential decreases down the group as the distance between valence electron and nucleus increases. The ionization potential increases after the successive removal of one or more electrons from isolated gaseous atom. Small size cations will have high ionization potential than large size cations.
The decreasing order of second ionization potential is: $$Mg > Ca > Ba$$

SIMILAR QUESTIONS

s - block Elements (Alkali and Alkaline Earth Metals)

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

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)

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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