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The reactivity increases. Group 1 are the alkali metals so they react by losing their valence electrons. Caesium is more reactive because it gives up its electrons more readily. It has more inner shells s...

Mechanism: Nucleophilic Substitution
Electronegativity is the ability of an atom to attract a bonding pair of electrons. As bromine is more electronegative than carbon, the C-Br bond...

stronger van der waal bonds because iodide ion (I-) has a larger electron cloud so more polarisable so istantaneouos dipoles happen more often and more strongly, so more energy is needed to overcome these...

A full electron configuration shows the amount of electrons in each shell and subshell of an element or ion. Shells (also called energy levels) progress from 1 to 4, with 1 being the closest to the centre...

The atoms are composed of a positive nucleus surrounded by negative electrons. In order to ionically bond, each group 1 element wants to lose its outer electron to whatever it is going to bond to, eg Cl. ...