MCQ-16
Which of the following is the correct decreasing order of basic character of alkali metal oxides?
A. Li₂O < Na₂0 < KO₂
B. Li₂O > Na₂O > KO₂
C. KO2 < Na₂O < Li₂0
D. KO₂> Na2O > Li₂O
Answer: D
MCQ-17
Ionization energy is the index to the metallic character. Which of the following is correct in the case of metals?
A. Low I.E
B. High I.E
C. Intermediate I.E
D. High E.A
Answer: A
MCQ-18
Which of the following is an alkali metal of period number four?
A. Cs
B. Rb
C. K
D. Na
Answer: C
MCQ-19
Sodium reacts with water more vigorously than lithium because
A. Na is more electropositive than Li
B. Ionization energy of Na is greater than Li
C. Density of Na is less than Li
D. Melting point of Na is less than Li
Answer: A
MCO-20
Which alkali metal chloride has minimum ionic character.
A. LiCI
B. NaCl
C. KCI
D. CsCI
Answer: A
