A. Their oxides are basic
B. Their oxide and hydroxides are water soluble
C. Both A & B
D. They are found in earth
Related Mcqs:
- Alkali and alkaline earth metals impart colours when heated over burner. It is due to______________?
A. Smaller electronegativity of alkali metals
B. Smaller ionic radius of these metals
C. De-excitation of electrons from higher energy levels to low energy level
D. Excitation of electrons from low energy levels to higher energy levels - First ionization potential of alkaline earth metal is greater than alkali metals because___________________?
A. They are more reactive
B. They have greater atomic radii
C. They have smaller atomic sizes
D. All - Which one of the following alkali metals forms only normal oxide when it reacts with O2 ?
A. Lithium
B. Sodium
C. Potassium
D. Rubidium - 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 of following metals can be displaced by all other metals from its solution ?
A. Ag
B. A
C. Au
D. Cu - Boron is non metal while other elements of IIIA group are metals. This is because______________?
A. it has small size
B. it has high nuclear charge
C. it forms molecular addition compounds
D. all of the above - Which one of the following is not an alkali metal ?
A. Francium
B. Caesium
C. Rubidium
D. Radium - The word Alkali means__________________?
A. Base
B. Basic salt
C. Ashes
D. Spirit - Which of the p-block elements are not representative elements ?
A. Alkali metals (I-A)
B. Group-14 elements (IV-A)
C. Group-18 elements (VIII-A)
D. Halogens (VII-A) - Metallic characters of alkali metals_____________________?
A. Increase down the group
B. Decrease down the group
C. No regular trend
D. Remain same
