Classification of Elements, Periodic Table, Periodicity in Properties - MCQ Test Series for all Medical, Engineering Entrance Exams and Admission Tests


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Classification of Elements, Periodic Table and Periodicity in Properties (Syllabus):

Genesis of Periodic Classification, Earlier Attempts of Classification of Elements, Mendeleev’s Periodic Law and Original Periodic Table, Modern Periodic Law and Long Form of Periodic Table, (Modified Form of Mendeleev’s Periodic Table), Naming the Elements, Periodic Table of Elements (Long Form representing Electron Configurations), Position of an Element on the Basis of Electronic Configuration, Nomenclature of Elements with Atomic Number > 100, Electronic Configurations of Elements and the Periodic Table, Periodic Trends in Properties of Elements or Atomic Properties or Periodic Properties of Elements, The Screening Effects or Shielding Effect, Effective Nuclear Charge, Ionisation Enthalpy or Ionisation Potential, Atomic Radii, Ionic Radii, Ionization Enthalpy, Electron Gain Enthalpy, Electron Affinity, Electronegativity, Valence, Electronic Configurations and Types of Elements: s, p, f-Blocks

Classification of Elements, Periodic Table and Periodicity in Properties

Fully Solved Practice Questions - MCQ Test Series (Set-1 : Q.No 1-10)

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Question 1: An element ‘X’ with atomic number 114 has recently been discovered. Its IUPAC name is:
a. Eka-lead    b. Ununfortium    c. Ununquadium     d. Bohrium

Question 2: The maximum number of elements available in elemental form
a. 26   b. 92    c.111     d. 118

Question 3: Which of the following ion is the largest in size?
a. K+    b. Ca2+   c. Cl-    d. S-2

Question 4: Element with electronic configuration as [Ar]18 3d5 4s2 is placed in:
a. 1st group, s-block       b. 2nd group, s-block  
c. 5th group, d-block      d. 7th group, d-block

Question 5: The atom larger in size as compared to oxygen is:
a. F    b. He   c. Ne    d. None of these.

Question 6: In the long form of periodic table, the number of period indicates the value of:
a. Atomic number                    b. Atomic mass 
c. Principal quantum number  d. Azimuthal quantum number

Question 7: First periodic table was drafted by
a. Mosely     b. Newlands    c. Dobereiner   d. Mendeleev

Question 8: Which one of the following is correct order of the size of iodine species?
a. I> I> I          b. I- > I > I+    
c. I > I- > I+            d. I > I+ > I-

Question 9: Among Cl- , F- , Br- and I-  the correct order of increasing atomic radii is:
a. I- > F- > Cl- > Br-     b. I- > Br- > Cl- > F-   
c. F- > Br- > Cl- > I-     d. F- > Cl- > Br- > I-

Question 10: Ce (58) is a member of :
a. s-block   b. p-block  
c. d-block   d. f-block

Classification of Elements, Periodic Table and Periodicity in Properties
Solutions of Practice Questions Set 1 (No. 1 - 10)
Answer 1: (c) Hint: Un – un – quad – ium
                                1      1       4
Answer 2: (b)    Answer 3: (d)
Answer 4: (d) Last electrons enter in d-orbital. So, it belongs to d-block. For d-block elements the group number is equal to the number of valence electrons + number of electrons in (n – 1) d sub shell i.e., 2 + 5 =7th group.
Answer 5: (c)  Answer 6: (c) [Hint: The serial number of the period indicates the principal quantum number (n) which is the value of the valence shell of the atoms of the elements present in that period.]
Answer 7: (d)  Answer 8: (b)  Answer 9: (b)  Answer 10: (d)

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