Question

1. although IE1 values of alkaline earth metals are higher than those of alkali metals, the IE2 value alkaline earth metals are much smaller than those of alkali metals why? 2.the hydroxides of alkaline earth metals are less basic than alkali metals of the corresponding periods. why?

Answer 1

Ans:-1 Ionization energy is the energy to remove an electron. It's easier to remove one electron from an alkali metal than an alkaline earth metal because the element will then obtain noble gas configuration (filled 8 electrons in the valence shell).
The second ionization energy would be the energy to remove a second electron. The second ionization energy would be massively higher for an alkaline earth metal because it would obtain noble gas configuration, whereas the alkali metal would be pulling an electron off a filled valence shell (very difficult)


Ans:- 2. The oxides of alkali metals are very basic in nature. This happens due to the highly electropositive nature of alkali metals, which makes these oxides highly ionic. Hence, they readily dissociate in water to give hydroxide ions.
The oxides of alkaline earth metals are quite basic but not as basic as those of alkali metals. This is because alkaline earth metals are less electropositive than alkali metals.

Answer 2

Answer:

Ionization energy is the energy to remove an electron. It's easier to remove one electron from an alkali metal than an alkaline earth metal because the element will then obtain noble gas configuration (filled 8 electrons in the valence shell).

The second ionization energy would be the energy to remove a second electron. The second ionization energy would be massively higher for an alkaline earth metal because it would obtain noble gas configuration, whereas the alkali metal would be pulling an electron off a filled valence shell (very difficult)

Ans:- 2. The oxides of alkali metals are very basic in nature. This happens due to the highly electropositive nature of alkali metals, which makes these oxides highly ionic. Hence, they readily dissociate in water to give hydroxide ions.

The oxides of alkaline earth metals are quite basic but not as basic as those of alkali metals. This is because alkaline earth metals are less electropositive than alkali metals.