How do the ionization energies of the alkaline earths compare with those of the adjacent alkali metals?

Sodium $Na_11^23$ is so reactive that if sodium metal is placed in water it will react vigorously to produce Hydrogen gas and heat often causing an explosion. All of...

$"Option A,"$ high densities are NOT properties associated with the alkali metals. Lithium, sodium, and potassium, would float on water (but for the reason that these metals react with water)....

It is well known that ionization energies INCREASE across a Period from left to right as we observe the Table, but decrease down a Group. Across the Period, as nuclear...

The realization that earths were in fact oxides was attributed to Lavoisier. And the Group 2 metals form a stable series of sparingly soluble binary oxides. I am told that...

Two factors are important here. $"A priori"$ we would expect that it would be harder to remove an electron from a cation than from a neutral species. This is from...

As you know, metallic results from the delocalization of electrons from the parent metal atom so that positive ions are conceived to swim in a sea of electrons. This view...

As the outermost electrons are further from the positive nucleus there is less attraction between the negative electron(s) and the nucleus. As there is less attractive force it requires less...

$Mg, Z= 12:1s^(2)2s^(2)2p^(6)3s^(2)$ $"1st ionization energy, 738 kJ"*"mol"^-1;$ $"2nd ionization energy, 1450 kJ"*"mol"^-1;$ $"3rd ionization energy, 7730 kJ"*"mol"^-1$. $Al, Z= 13:1s^(2)2s^(2)2p^(6)3s^(2)3p^1$ $"1st ionization energy, 577 kJ"*"mol"^-1;$ $"2nd ionization energy, 1816...

And we would also expect them to increase in the order...... $"metals"$ $<$ $"non-metals"$ $<$ $"Noble Gases"$. So why? Metals are generally regarded as electron-rich materials, whose are delocalized and...

There are three factors which decide how easily an electron can be removed, in this order of priority: Number of shells (distance from the nucleus in effect) Effect...