Why does magnesium have a higher melting point than sodium

Asked by wiki @ 02/12/2021 in Chemistry viewed by 651 People

Which statement best compares the melting points of magnesium and sodium?

a
Magnesium has a higher melting point because it contributes one additional electron per atom than sodium in the electron sea.
b
Sodium has a higher melting point because it contributes one fewer electron per atom than magnesium in the electron sea.
c
Sodium has a higher melting point because it contributes two fewer electrons per atom than magnesium in the electron sea.
d
Magnesium has a higher melting point because it contributes two additional electrons per atom than sodium in the electron sea.

Answered by wiki @ 02/12/2021

A because according to electron sea theory magnesium shares two valence electrons in electron sea while sodium shares one suggesting that magnesium has stronger metallic bond than sodium so breaking metallic bond in magnesium will require more energy as compared to breaking metallic bond in sodium

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Why does magnesium have a higher melting point than sodium

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