Among alkali metal ions why lithium has highest mp
Sagarjha2283:
Because m.p decreases down the group
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heya friend!!☺☺
here's your answer!!☺☺
You have to understand that melting point is related to the bonds in a metal between the metal cation and the 'sea of electrons'. With an increase in atomic number, you have an increase in electron shells.
As the radius of atoms get larger down the group, you could say that the force holding them together is spread over the greater area and hence, the metal cations are more weakly bonded. And coming back to my first point, when the bonding is weaker, the metal's melting point will decrease.
hence the melting point of lithium is highest among alkali metals..!!
hope it helps you!!☺☺
here's your answer!!☺☺
You have to understand that melting point is related to the bonds in a metal between the metal cation and the 'sea of electrons'. With an increase in atomic number, you have an increase in electron shells.
As the radius of atoms get larger down the group, you could say that the force holding them together is spread over the greater area and hence, the metal cations are more weakly bonded. And coming back to my first point, when the bonding is weaker, the metal's melting point will decrease.
hence the melting point of lithium is highest among alkali metals..!!
hope it helps you!!☺☺
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