Which one of the following alkali metals forms only normal oxide when it reacts with O2 ?
A. Lithium B. Sodium C. Potassium D. Rubidium
Chemistry MCQs
Which one of the following pairs shown diagonal relationship in the periodic table ?
A. Sodium and Lithium B. Lithium and magnesium C. Lithium and beryllium D. Boron and Beryllium
Sodium is not observed in +2 oxidation state because of its__________________?
A. high first ionization potential B. high second ioniation potential C. high ionic radius D. high electronegativity
Magnesium metal does not burn in the vessel containing_______________?
A. N2 B. O2 C. N2 and O2 D. Ne
Second ionization potential of alkali metals are very high due to_______________?
A. being s-block elements B. inert gas configurations C. ns1 electronic configuration D. being metals
Which one can form complex ?
A. Na B. Cr C. Li D. K
Addition of 2% gypsum in cement________________?
A. Triggers hydration B. Triggers hydrolysis C. Prevents rapid hardening D. all of the above
Phenanthrene is a fused polycyclic compound contains __________ benzene rings ?
A. Two B. Three C. Four D. Five