Why does basicity increase down group 1?

Basically Basicity or basic character is dependent on how lately the electron in lost . so going down the group the force of attraction on electron is reduced because of which electron is lost easily and hence it’s Basicity is increased.

Why does stability of hydroxides increase down the group?

In the periodic table, as we go down in the group the lattice enthalpy increases, which leads to an increase in thermal stability of the hydroxide.

What is the decreasing order of basicity of hydroxides of the alkaline earth metals?

The oxides of calcium, strontium, and barium are basic and the hydroxides are strongly basic. The solubilities of the hydroxides in water follow the order: Be(OH)2 < Mg(OH)2 < Ca(OH)2 < Sr(OH)2 < Ba(OH)2.

Why the basicity decreases down the group?

Going down the group, size of the atom increases. And hence, electron density over the group 15 elements decreases. Thus tendency to donate electrons decreases and basicity decreases.

How does basicity decrease down the group?

As we go down the group, size of the atom increases. And hence, ELECTRON DENSITY OVER THE GROUP 15 ELEMENT DECREASES. That’s why the tendency to donate electrons decreases, hence basicity decreases down the group.

Why solubility of hydroxides decrease down the group?

-Elements from calcium to barium belong to group 2. The hydroxides, fluorides and oxalates of these elements solubility increases down the group. This is due to the decrease in lattice energy of the hydroxide salt(in case of hydroxides) and the size of the cation increases down the group.

Why does the solubility of Group 2 hydroxides increases down the group?

The hydration enthalpy also decreases since the size of the cation increases. However, due to the square factor, the lattice enthalpy decreases faster than the hydration enthalpy. This is why the solubility of Group 2 hydroxides increases while progressing down the group.

How does basic character of oxides and hydroxides down the group in alkali metals change why?

The alkali metal oxides are basic in nature. As we move down the group, the size of the metal ion increases, so the bonding between the metal and hydroxide ion is weak. Hence, they can easily lose OH. So, down the group, basicity of alkali metal oxides and hydroxides increases.

What is the reason for the increasing stability of peroxide and Superoxides of alkali metals down the group?

The increasing stability of the peroxide or superoxide, as the size of the metal ion increases, is due to the stabilisation of large anions by larger cations through lattice energy effects.

Why do basic characters decrease down group 16?

As we know that electronegativity is the property of the element to attract electron pairs. Hence, the acidic character of the oxides “decreases down the group” because the electronegativity decreases down the group. While on moving down the group, basic character increases due to its increase in metallic character.

Why do hydroxides increase in strength down the group?

The hydroxides are basic in nature and basic strength increases down the group. This is due to the low ionization energies of these metals where the M-O bond in MOH is weak and it can cleave to give OH – ions in solution. As the ionization energy decreases down the group, the basic strength of the hydroxides increases.

Why do alkali metals act as strong bases?

Also , alkali metals ions have very high hydration energy that is the alkali metal ions easily get hydrated , so this further helps in the dissociation of alkali metal bases to release the respective metal ions and hydroxyl negative ions . That is why they act as strong bases .

Why do oxides and hydroxides of metals have a basic nature?

We know that oxides and hydroxides of metals are basic in nature. Thus basic character increases down the group. The basic nature can also be explained by electro negativity concept and acid ionisation constant (Ka). As the electro negativity of the orbital which contains the lone pair increases acidic strength increase.

Why are hydroxides of alkali metals less ionic than alkaline earth metals?

It is because the hydroxide of alkaline Earth metals have greater lattice enthalpy than hydroxides of alkali metals which make the hydroxides of alkali metals less ionic than hydroxides of alkaline Earth metals.