Trend in Melting point going down group 1 elements
Going down group 1 the period number increases. This means the number of shells increases, leading to a decrease in electrostatic attraction between the positive nucleus and outer most electrons. This weaker bond means less energy is require to melt the alkali metals. Hence lowering the melting point.
AU
Related Chemistry GCSE answers
All answers ▸What is the effect of increasing the temperature on the rate of reaction?
How do metals conduct electricity?
How can an explosion be explained by the different ways molecules are packed together in solids, liquids and gases?
What happens when two atoms of potassium react with one atom of sulphur?