They are both very reactive because of their low number of valence electrons, they both react with water (with the exception of beryllium oxide), and they form positive ions. They are all metals.
The charge for all elements in Group 2A is +2.
There is none. All of the elements in group/family in group IIA/2 are solids at room temperature.
The electron affinity values of Group IIA (alkaline earth metals) are generally lower than those of Group IIA (halogens) due to their electron configurations. Group IIA elements have a filled s subshell, making it energetically unfavorable to gain an additional electron, as they prefer to lose electrons to achieve a stable noble gas configuration. In contrast, Group IIA elements have higher electron affinity values because they have a strong tendency to gain an electron to complete their p subshell, leading to greater stability. Thus, the difference in electron affinity reflects the distinct chemical behaviors and stability preferences of these groups.
The atomic size increases as you move down the Group IIA elements from Be to Ra. This trend is due to the increase in the number of electron shells as you move down the group, leading to greater atomic radius.
When group IIA elements lose their valence electrons, they form cations with a +2 charge and have the same electron configuration as the nearest noble gas in the periodic table, which is group VIIIA (noble gases).
base in my experience.... because of the gravity of the earth...
Both Group IA and IIA elements have low ionization energies because they have one or two valence electrons that are easily removed. Group IA elements have a lower ionization energy compared to Group IIA elements due to the increased distance from the nucleus and increased shielding effect in Group IA.
The charge for all elements in Group 2A is +2.
There is none. All of the elements in group/family in group IIA/2 are solids at room temperature.
Main group elements have elements from groups 1 and 2, except hydrogen and groups 13 to 18. Main group elements are elements in groups who's lightest elements are shown by helium, lithium, boron, beryllium, carbon, nitrogen, oxygen, and fluorine.
They lose electrons, not elements. These are metals. Group I metals (IA or alkali metals), Group 2 metals (IIA or alkaline earth metals), transition metals (groups 3 thru 12), and all other metals.
The elements in Group IIA on the periodic table are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). These elements are alkaline earth metals and share similar chemical properties.
Group A is an obsolete symbol for groups; the old groups IA and IIA contain alkali metals and alkali earth metals.
The element with its outermost electrons in an S sublevel is found in Group 1 and Group 2 of the periodic table. These elements have their outermost electrons in the S sublevel before transitioning to the D sublevel in subsequent groups.
The atomic size increases as you move down the Group IIA elements from Be to Ra. This trend is due to the increase in the number of electron shells as you move down the group, leading to greater atomic radius.
b. valence electrons d. electrons needed to fill their octet
When group IIA elements lose their valence electrons, they form cations with a +2 charge and have the same electron configuration as the nearest noble gas in the periodic table, which is group VIIIA (noble gases).