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MCQs

Total Questions : 740 | Page 2 of 74 pages
Question 11. In the second period, second ionization energy of Be is more than B due to
  1.    Stability of s-orbital of Be
  2.    Number of electrons
  3.    Nuclear charge
  4.    atomic size
 Discuss Question
Answer: Option A. -> Stability of s-orbital of Be
Answer: (a).Stability of s-orbital of Be
Question 12. From left to right on the periodic table, electronegativity difference reduces and trend shifts towards
  1.    Ionic halides
  2.    Covalent halides
  3.    Polymeric halides
  4.    Oxides
 Discuss Question
Answer: Option B. -> Covalent halides
Answer: (b).Covalent halides
Question 13. If ionic bond is present between metal and halogen, the halides are called
  1.    Ionic halides
  2.    Covalent halides
  3.    Polymeric halides
  4.    None of above
 Discuss Question
Answer: Option A. -> Ionic halides
Answer: (a).Ionic halides
Question 14. Oxides of non-metallic elements i.e., C, N, P and S are in nature
  1.    Acidic
  2.    Basic
  3.    Amphoteric
  4.    Super oxides
 Discuss Question
Answer: Option A. -> Acidic
Answer: (a).Acidic
Question 15. 21 KJ/mol is the electron affinity value for
  1.    He
  2.    Ne
  3.    Ar
  4.    Kr
 Discuss Question
Answer: Option A. -> He
Answer: (a).He
Question 16. The average of the distance between nucleus of the atom and outer most shell is
  1.    Atomic mass
  2.    Atomic number
  3.    Atomic radius
  4.    Ionic radius
 Discuss Question
Answer: Option C. -> Atomic radius
Answer: (c).Atomic radius
Question 17. When we move from top to bottom, metallic character
  1.    Increases
  2.    Decreases
  3.    Remain constant
  4.    No change
 Discuss Question
Answer: Option A. -> Increases
Answer: (a).Increases
Question 18. Vanadium shows oxidation state
  1.    II
  2.    V
  3.    VI
  4.    VII
 Discuss Question
Answer: Option B. -> V
Answer: (b).V
Question 19. Allotropic form of carbon having giant tetrahedral structure
  1.    Graphite
  2.    Diamond
  3.    Coke
  4.    Charcoal
 Discuss Question
Answer: Option B. -> Diamond
Answer: (b).Diamond
Question 20. Metallic character decreases in the periods due to
  1.    Increase in atomic radii
  2.    Decrease in atomic radii
  3.    Small size
  4.    High charge density
 Discuss Question
Answer: Option B. -> Decrease in atomic radii
Answer: (b).Decrease in atomic radii

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