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MCQs

Total Questions : 425 | Page 2 of 43 pages
Question 11. The Ionic radius of hydrogen in pm is
  1.    207
  2.    208
  3.    205
  4.    206
 Discuss Question
Answer: Option B. -> 208
Answer: (b).208
Question 12. Tendency of an atom to attract a shared electron pair towards itself, is called its
  1.    electron affinity
  2.    ionization energy
  3.    electro negativity
  4.    atomic radii
 Discuss Question
Answer: Option C. -> electro negativity
Answer: (c).electro negativity
Question 13. Shapes of molecules are formed by
  1.    chemical combinations
  2.    forming gases
  3.    separation
  4.    characterization
 Discuss Question
Answer: Option A. -> chemical combinations
Answer: (a).chemical combinations
Question 14. Insufficient gap between 1st and 2nd ionization energies show valence
  1.    two
  2.    three
  3.    one
  4.    four
 Discuss Question
Answer: Option C. -> one
Answer: (c).one
Question 15. In chemical combination of sodium hydride electron is gain by
  1.    hydrogen
  2.    sodium
  3.    nitrogen
  4.    both a and b
 Discuss Question
Answer: Option A. -> hydrogen
Answer: (a).hydrogen
Question 16. Element having low ionization energies are
  1.    nonmetal
  2.    atom
  3.    ion
  4.    metal
 Discuss Question
Answer: Option D. -> metal
Answer: (d).metal
Question 17. First ionization energy of sodium is
  1.    465
  2.    457
  3.    497
  4.    496
 Discuss Question
Answer: Option D. -> 496
Answer: (d).496
Question 18. The atomic radius of helium in pm is
  1.    32
  2.    36
  3.    35
  4.    31
 Discuss Question
Answer: Option D. -> 31
Answer: (d).31
Question 19. transfer of electrons from higher energy state to a lower energy state is responsibility of
  1.    energy difference
  2.    electron affinity
  3.    electro negativity
  4.    electro positivity
 Discuss Question
Answer: Option A. -> energy difference
Answer: (a).energy difference
Question 20. Character of bonds which are formed between similar atoms are
  1.    polar
  2.    non-polar
  3.    neutral
  4.    polar and non-polar
 Discuss Question
Answer: Option B. -> non-polar
Answer: (b).non-polar

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