![]() ![]() When we heat alkali metals, they produce color.įlame Coloration: Li-crimson, Na- yellow, K- pale violet, Rb- red violet, Cs-blue.Density of alkali metals increase as we move down to group.Their melting and boiling points are low as we go down to group.So, we can easily cut them through a knife. ![]() This group elements are typical metal and soft.It is unipositive ion, positive charge of these elements increases down to group. ![]()
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