A. They are more reactive
B. They have greater atomic radii
C. They have smaller atomic sizes
D. All
Related Mcqs:
- 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 - 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 - A elements are named as alkali metals because_______________?
A. Their oxides are basic
B. Their oxide and hydroxides are water soluble
C. Both A & B
D. They are found in earth - Which one of the following alkali metals forms only normal oxide when it reacts with O2 ?
A. Lithium
B. Sodium
C. Potassium
D. Rubidium - Which one of the following is not an alkali metal ?
A. Francium
B. Caesium
C. Rubidium
D. Radium - Which of the following elements has greater 1st ionization energy__________________?
A. B
B. C
C. N
D. O - Greater shielding effect corresponds to ionization energy value___________________?
A. Greater
B. Lesser
C. Remain same
D. No effect - Greater value of standard reduction potential greater will be tendency__________________?
A. to get oxidized
B. to get reduced
C. to accept electrons
D. both B and C - 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
