CBSE Class 11-science Answered
Discuss any four properties which show the anomalous behavior of Be and its similarity with Al.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
The following points illustrate the anomalous behavior of Be and its resemblance with Al.
(i) Unlike groups - 2 elements but like aluminium, beryllium forms covalent compounds.
(ii) The hydroxides of Be, [Be(OH)2] and aluminium [Al(OH)3] are amphoteric in nature, whereas those of other elements of group - 2 are basic in nature.
(iii) The oxides of both Be and Al i.e. BeO and Al2O3 are high melting insoluble solids.
(iv) BeCl2 and AlCl3 have bridged chloride polymeric structure.
(i) Unlike groups - 2 elements but like aluminium, beryllium forms covalent compounds.
(ii) The hydroxides of Be, [Be(OH)2] and aluminium [Al(OH)3] are amphoteric in nature, whereas those of other elements of group - 2 are basic in nature.
(iii) The oxides of both Be and Al i.e. BeO and Al2O3 are high melting insoluble solids.
(iv) BeCl2 and AlCl3 have bridged chloride polymeric structure.
Answered by | 04 Jun, 2014, 03:23: PM
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