Single Choice

Which of the following will have lowest value of $$K_{sp}$$ at room temperature?

A$$Be(OH)_2$$
Correct Answer
B$$Mg(OH)_2$$
C$$Ca(OH)_2$$
D$$Ba(OH)_2$$

Solution

$${ Be(OH) }_{ 2 } $$ is least soluble in water due to low hydration energy of $$ { Be }^{ 2+ } $$ and covalent nature. It has lowest solubility product.
$$ { Be(OH) }_{ 2 }\rightleftharpoons \ { Be }^{ 2+ }+2O{ H }^{ - } $$
$$ { K }_{ sp }\ =\ { [Be }^{ 2+ }]{ [O{ H }^{ - }] }^{ 2 } $$


SIMILAR QUESTIONS

s - block Elements (Alkali and Alkaline Earth Metals)

In the following table are given eight elements, $$A, B, C, D, E, F, G$$ and $$H$$ (here letters are not the usual symbols of the elements) of the Modern Periodic Table with the atomic numbers of the elements in parenthesis. Period Group $$1$$ Group $$2$$ $$2$$ $$A(3)$$ $$E(4)$$ $$3$$ $$B(11)$$ $$F(12)$$ $$4$$ $$C(19)$$ $$G(20)$$ $$5$$ $$D(37)$$ $$H(38)$$ Out of the three elements $$B, E,$$ and $$F$$, which one has the biggest atomic size?

s - block Elements (Alkali and Alkaline Earth Metals)

The metal carbonate which decomposes easily on heating is:

s - block Elements (Alkali and Alkaline Earth Metals)

Which of the following does not exist in solid state?

s - block Elements (Alkali and Alkaline Earth Metals)

The compound insoluble in acetic acid is :**

s - block Elements (Alkali and Alkaline Earth Metals)

The correct order of the solubility of alkaline-earth metal sulphates in water is:

s - block Elements (Alkali and Alkaline Earth Metals)

Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?

s - block Elements (Alkali and Alkaline Earth Metals)

The decomposition temperature is maximum for:

s - block Elements (Alkali and Alkaline Earth Metals)

Solubility of the alkaline earth's metal sulphates in water decreases in the sequence :

s - block Elements (Alkali and Alkaline Earth Metals)

On heating which of the following $$CO_2$$ releases most easily?

s - block Elements (Alkali and Alkaline Earth Metals)

Which one of the following alkaline earth metal carbonates is thermally the most stable?

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