Why does lithium have a higher melting point than sodium
Melting point decreases going from lithium to sodium because sodium is lower down group one therefore it has a greater number of shells. A greater number of shells means a greater atomic radius - a greater shielding effect of the inner shells. This makes it easier to remove an electron from the outer shell of electrons because there is a lower nuclear attraction
JO
Related Chemistry A Level answers
All answers ▸What is the ideal gas equation?
What is fractional distillation used for in industry? Explain the molecular basis behind it.
Why, in the bromination of phenols, do you not need an acid catalyst like you do in the bromination of benzene?
What evidence is there to support the delocalised model of benzene over Kekulé's model?