MCQ-21
Which of the following remain the same along periods 2 and 3?
A. Ionization energy
B. Shell number (Shielding effect)
C. Atomic radius
D. Electronegativity
Answer: B
MCQ-22
Which of the following alkali metal form only normal oxides?
A. Li 6
B. Na
C. Mg
D. K
Answer: A
MCQ-23
In the case of melting points and boiling points which element will be present at the top of the graph
A. Be
B. C
C. B
D. O
Answer: B
MCQ-24
Alkaline earth metals form _______ oxide at normal conditions
A. Normal
B. Per
C. Super
D. Sub
Answer: A
MCQ-25
Choose the correct statement
A. Atomic radii of IA elements are less than IIA
B. Melting points of IA elements are high IIA
C. Melting points of IIA elements are high than IA
D. Alkali metals are less reactive than Alkaline earth metals
Answer: C
