Periodic Classification of Elements and Periodicity MCQ's 4
Here are MCQ's from Periodic Classification of Elements and Periodicity chapter 1 chemistry Book 2.
21. Mark the correct statement:
( A) Na+ is smaller than Na atom
(B) Na+ is larger than Na atom
(C) CI- is smaller than CI atom
(D) CI- and CI are equal in size
22. Who introduced the zero groups?
(A) Lothar Meyer (B) Lockery
(C) Mendleev (D) Ramsay
23. Element, of group I-B are called
(A) Representative elements
(B) Transition elements
(C) Rare earth
(D) Coinage metals
24. The element with Z = 24 is placed in the period
(A) 5 (B) 2
(C) 3 (D) 4
25. Which is the part of metalloids?
(A) NA and K (B) F and CI
(C) None of these (D) Cu and Au
26. Which one of the following has the maximum electron affinity?
(A) I (B) Br
(C) CI (D) F
27. On electrolysis of NaH, hydrogen is liberated
(A) At anode (B) in the electrolyte
(C) At cathode (D) none of them
28. Elements with greater number of electrons have _________values of ionization energy.
A) Only one B) More than one
C) Zero D) Infinite
29. Which of the following possess maximum hydration power?
A) Na+ B) K+
C) Mg+2 D) Ca+2
30. Higher value of electron affinity means_________
A. Atom will lose electron easily
B. Atom will gain electron easily
C. Atom may form di-positive ion
D. The reason is unknown
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