The main group elements i.e. representative elements complete their electron configuration using s and p electrons in the periodic table. These elements range from the most metallic to the most non-metallic with intermediate properties, the semi-metals, in between .The elements which occur at the two extremes of the periodic table are highly reactive and therefore, these highly reactive elements do not occur in free state : they usually occur in the combined forms. Beryllium and aluminium exhibit many properties which are similar, but, the two elements differ in :A. Forming covalent halidesB. Forming polymeric hydridesC. Exhibiting maximum covalency in compoundsD. Exhibiting amphoteric nature in their oxides

The main group elements i.e. representative elements complete their el

1.	The main group elements i.e. representative elements complete their electron configuration using s and p electrons in the periodic table. These elements range from the most metallic to the most non-metallic with intermediate properties, the semi-metals, in between .The elements which occur at the two extremes of the periodic table are highly reactive and therefore, these highly reactive elements do not occur in free state : they usually occur in the combined forms. Beryllium and aluminium exhibit many properties which are similar, but, the two elements differ in :A. Forming covalent halidesB. Forming polymeric hydridesC. Exhibiting maximum covalency in compoundsD. Exhibiting amphoteric nature in their oxides
Answer» Correct Answer - C Beryllium has the maximum vallency +2 while aluminium exhibits its valency as +3.

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