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| 1. |
What is the common molecular formula of compound formed between alkali metals with halogens |
| Answer» Alkali metals react vigorously with halogens to form ionic metal halides of the general Formula , MX where M stands for metal and X for the halogens.2 M + X2 ———> 2 MXThe reactivity of alkali metal towards a particular halogen increases as we move down the group from Li to Cs due to a decrease in the ionization enthalpy or increase in the electropositive character of the metal. Potassium reacts with chlorine more vigorously than sodium.Reactivity of halogens towards a particular alkali metal decreases from F2 to I2 i.e.F2 > Cl2 > Br2 > I2. | |