When we talk about Group 2 elements, why we put Beryllium as an exception regarding that except this all the other Group 2 metals are know as ALkaline earth metals.
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Please find the solution to the asked query:
The group-2 of periodic table is known as alkaline earth metal. It includes Be, Mg, Ca, Sr and Ba and Ra. Among them Be show characteristic differences in property from other group members
1)Be form covalent compounds while other member form ionic compound.
2) BeO is amphoteric in nature.
3) Be does not react with water even at high temperature.
4) Beryllium carbide reacts with water to give methane whereas carbides of other alkaline earth metals gives acetylene gas.
Be2C + 4H2O → 2Be(OH)2 + CH4
Mg2C2 + 2H2O → Mg(OH)2 + C2H2
CaC2 + 2H2O → Ca(OH)2 + C2H2
Reason for exceptional behaviour of Be is its smaller size, high effective nuclear charge, absence of d-orbital. These facts make it different from other members of alkaline earth metals.hence sometime it is not included in group.
Hope this information will clear your doubts regarding the topic. If you have any other doubts please ask here on the forum and our experts will try to solve them as soon as possible.
Regards
Please find the solution to the asked query:
The group-2 of periodic table is known as alkaline earth metal. It includes Be, Mg, Ca, Sr and Ba and Ra. Among them Be show characteristic differences in property from other group members
1)Be form covalent compounds while other member form ionic compound.
2) BeO is amphoteric in nature.
3) Be does not react with water even at high temperature.
4) Beryllium carbide reacts with water to give methane whereas carbides of other alkaline earth metals gives acetylene gas.
Be2C + 4H2O → 2Be(OH)2 + CH4
Mg2C2 + 2H2O → Mg(OH)2 + C2H2
CaC2 + 2H2O → Ca(OH)2 + C2H2
Reason for exceptional behaviour of Be is its smaller size, high effective nuclear charge, absence of d-orbital. These facts make it different from other members of alkaline earth metals.hence sometime it is not included in group.
Hope this information will clear your doubts regarding the topic. If you have any other doubts please ask here on the forum and our experts will try to solve them as soon as possible.
Regards