Why are the Group IIA metals harder than the Group IA metals?
They are also harder than the alkali metals. This may be attributed to the general valence electron configuration ns2 for the alkaline earths, which involves two electrons per metal atom in metallic bonding (instead of just one as in an alkali metal).
Why are Group 2 elements harder and denser than group 1 elements?
Consequentially, they are harder and have higher melting points.in group two elements the second electron enters the s orbital and increased charge on the nucleus creates more attractive force on electrons in the atom around so that the density increases and the elements behave as hard solids than the first group …
How do IA and IIA differ from group A elements?
The elements in group IA are called the alkali metals. The elements in group IIA are called the alkaline earth metals. The elements in group VIIA are called the halogens and the elements in group VIIIA are called the noble gases or the inert gases. Hope It Would Be Helpful!!!
Are group 2A elements hard?
Group 2A (or IIA) of the periodic table are the alkaline earth metals: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). They are harder and less reactive than the alkali metals of Group 1A.
What is the most electronegative element in Group 2a?
What is the lightest element in Group 2a?
Why do group 2 elements get more reactive?
Reactivity of Group II elements increases down the group. This can be explained by the increase in ease at losing two outer electrons as we descend the group. The loss of electrons becomes easier due to the decreasing ionisation energy required.
What are the characteristics of Group 14 elements?
Group 14 is the carbon family. The five members are carbon, silicon, germanium, tin, and lead. All of these elements have four electrons in their outermost energy level. Of the Group 14 elements, only carbon and silicon form bonds as nonmetals (sharing electrons covalently).
Are group 15 elements reactive?
The reactivity of the heavier group 15 elements decreases down the group, as does the stability of their catenated compounds. In group 15, nitrogen and phosphorus behave chemically like nonmetals, arsenic and antimony behave like semimetals, and bismuth behaves like a metal.
What are the three main group elements?
Elements in different groups are lumped together in one of three classes, depending on their properties. The classes are metals, nonmetals, and metalloids.