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MCQs

Total Questions : 425 | Page 4 of 43 pages
Question 31. Ionic bond is formed by complete transfer of electron form atom with low ionization energy to another atom and with high electron affinity ,it is theory of
  1.    Nylholm
  2.    Lewis
  3.    bohar
  4.    Gillespic
 Discuss Question
Answer: Option B. -> Lewis
Answer: (b).Lewis
Question 32. Average distance between nucleus of atom and its outermost electronic shell is called
  1.    atomic radius
  2.    atomic size
  3.    atomic junction
  4.    atomic weight
 Discuss Question
Answer: Option A. -> atomic radius
Answer: (a).atomic radius
Question 33. Ionic radius of lithium in pm is
  1.    60
  2.    61
  3.    67
  4.    65
 Discuss Question
Answer: Option A. -> 60
Answer: (a).60
Question 34. Stable noble gas which lies near to F is
  1.    Xenon
  2.    Neon
  3.    helium
  4.    Argon
 Discuss Question
Answer: Option B. -> Neon
Answer: (b).Neon
Question 35. According to modern theory of chemical bounding, level of energy in bonds formed from atoms
  1.    increases
  2.    decreases
  3.    remains constant
  4.    goes very low
 Discuss Question
Answer: Option B. -> decreases
Answer: (b).decreases
Question 36. Ionic radius for elements of group number VA to VIIA is formed by
  1.    negative ions
  2.    neutral ions
  3.    normal atom
  4.    neutral ion
 Discuss Question
Answer: Option A. -> negative ions
Answer: (a).negative ions
Question 37. Ionization energies is influenced by proton number of atom, of
  1.    molecular charge
  2.    electron charge
  3.    nuclear charge
  4.    proton charge
 Discuss Question
Answer: Option C. -> nuclear charge
Answer: (c).nuclear charge
Question 38. Sum of radii of two ions is
  1.    318pm
  2.    314pm
  3.    313pm
  4.    312pm
 Discuss Question
Answer: Option B. -> 314pm
Answer: (b).314pm
Question 39. Formation of which ions is take place in Ca₂a ?
  1.    tripositive
  2.    dinegative
  3.    dispositive
  4.    trinegative
 Discuss Question
Answer: Option C. -> dispositive
Answer: (c).dispositive
Question 40. Atomic radius of hydrogen in pm is
  1.    37
  2.    32
  3.    31
  4.    43
 Discuss Question
Answer: Option A. -> 37
Answer: (a).37

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