how beryllium behaves differently as compare to magnesium or compare physical and chemical properties of beryllium and calcium
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Answer:
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Answer:
Some important points of difference between beryllium and magnesium are given below:
Be is harder than other members of its group.
Be is lighter than Mg.
Be does not react with water while Mg reacts with boiling water.
BeO is amphoteric while MgO is weakly basic.
Its melting and boiling points are higher than those of Mg & other members.
Be forms covalent compounds whereas Mg forms ionic compounds.
Beryllium carbide reacts with water to give methane whereas carbides of other Mg gives acetylene gas.
Be2C + 4H2O → 2Be (OH)2 + CH4
Mg2C2 + 2H2O → Mg (OH)2 + C2H2
Beryllium does not exhibit coordination number more than four as it has four orbitals in the valence shell. Magnesium has coordination number 6.