Q37 / 180 · AIIMS 2010 · Chemistry

Beryllium and aluminium exhibit many properties which are similar. But the two elements differ in

Correct answer
A
maximum covalency in compounds
B
exhibiting amphoteric nature in their oxides
C
forming covalent halides
D
forming polymeric hydrides.

Solution

Be exhibits maximum covalency of four whereas Al shows maximum covalency of six.

Hence, the correct answer is option: 'A'.

More s Block Elements Questions

Which of the following are formula of methanides? (1) (2) (3) (4)25 May, 2019Properties of S-block elements
Assertion : The carbonate of lithium decomposes easily on heating to form lithium oxide and . Reason: Lithium being very small in size polar2017Properties of S-block elements
The pair of amphoteric hydroxides is2005Properties of S-block elements
Assertion : Potassium and caesium are used in photoelectric cells. Reason : Potassium and caesium emit electrons on exposure to light.2002Properties of S-block elements
Which alkali metal during flame test will show colour corresponding to maximum wavelength?26 May, 2019General Characteristics of Alkali Metals
Which of the following statements is false for alkali metals?26 May, 2019Compounds of Alkali Metals