Periodic Classification of Elements and Periodicity MCQ's 6

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Here is another set of MCQ's from Periodic Classification of Elements and Periodicity MCQ's chapter 1 Chemistry Book II

• 41.        Which one of the following is not a coinage metal?

  
  

  a) Au                            b) Cu

  c) Ag                            d) Pd

  
  

  42.        Which is the most metallic element of 2nd period?

  
  

  a) Lithium                      b) Beryllium

  c) Boron                       d) Carbon

  
  

  43.        The outer most orbital involved in chemical bonding is called

  
  

  a) Molecular orbital        b) Complete orbital

  c) Valence orbital          d) Free orbital

  
  

  44.        Elements, which form basic oxides are

  
  

  a) Electropositive          b) Electronegative

  c) Inert                          d) None of these

  
  

  45.        Which of the following has the most basic character?

  
  

  a) Na2O                         b) MgO

  c) Al2O3                        d) P2O3

  
  

  46.        Which of the following is smallest in size?

  
  

  a) K+1                            b) O-2

  c) F-1                             d) Na+

  
  

  47.        Ionization energy is lowest for

  
  

  a) Inert gases               b) Halogens

  c) Alkali metals             d) Alkaline earth metals

  
  

  48.        An isotope of hydrogen is

  
  

  a) Neptunium                 b) Plutonium

  c) Thorium                     d) Tritium

  
  

  49.        With respect to chlorine, hydrogen will be

  
  

  a) Electropositive          b) Electronegative

  c) Neutral                      d) None of these

  
  

  50.        Which of the following has the highest electron affinity?

  
  

  a) 1S2 2S2 2P3                               b) 1S2 2S2 2P6 3S1

  c) 1S2 2S2 2P5                               d) 1S2 2S2 2P5