Chemistry Quiz

Significant covalent characteristics in BeO and Be(OH)2 lead to

• Amphoteric behavior in the ionic oxides and hydroxides

•       

  Basic behavior in the ionic oxides and hydroxides

        

• Acidic behavior in the covalent compound

• Amphoteric behavior in the covalent compound

Factors causes diagonal relatioship including

• almost similar atomic radii and electronegativity of both Be and Al

• almost similar atomic radii of both Be and Al

• almost similar electronegativity of both Be and Al

• difference in the atomic radii and electronegativity of both Be and Al

Choose correct pair that exhibit diagonal relationship i Mg and Si, Ba and Al ii Mg and Li, Be and Al iii Be and Al, B and Si iv Ba and Al, B and Si

• i and iv

• ii and iii

• i, ii and iii

• ii, iii and iv

Choose one metal from Group 2 below that shows anomalous behaviour?

• Strontium (Sr)

• Barium (Ba)

• Magnesium (Mg)

• Beryllium (Be)

Choose the most correct statement. BeCl2 soluble in non-polar organic solvent, able to exist as dimer at room temperature and able to conduct electricity in molten state.

• BeCl2 soluble in non-polar organic solvent, able to exist as dimer at room temperature and able to conduct electricity in molten state.

• BeCl2 soluble in non-polar organic solvent, able to exist as dimer at room temperature and does not able to conduct electricity in molten state

• BeCl2 not soluble in non-polar organic solvent, able to exist as dimer at room temperature and does not able to conduct electricity in molten state

• BeCl2 not soluble in non-polar organic solvent, not able to exist as dimer at room temperature and does not able to conduct electricity in molten state