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MCQs

Total Questions : 25 | Page 2 of 3 pages
Question 11. Period number of the element indicates the value of
  1.    all shells
  2.    valence shell
  3.    1st shell
  4.    2nd shell
 Discuss Question
Answer: Option B. -> valence shell
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 12. The horizontal rows of the periodic table are called
  1.    rows
  2.    periods
  3.    columns
  4.    groups
 Discuss Question
Answer: Option B. -> periods
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 13. The average distance between the nucleus and outer shell is called
  1.    atomic size
  2.    nuclear size
  3.    shielding effect
  4.    atomic number
 Discuss Question
Answer: Option A. -> atomic size
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 14. The ability of an atom to attract electrons towards itself is called
  1.    electron affinity
  2.    electronegativity
  3.    ionization energy
  4.    shielding effect
 Discuss Question
Answer: Option B. -> electronegativity
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 15. The shielding effect across the period
  1.    increases
  2.    decreases
  3.    becomes equal to above periods
  4.    remains same
 Discuss Question
Answer: Option D. -> remains same
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 16. In periodic table elements with similar valence shell configuration are placed in
  1.    different groups
  2.    same group
  3.    different period
  4.    same period
 Discuss Question
Answer: Option B. -> same group
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 17. The period number of ²⁷₁₃Al is
  1.    1
  2.    2
  3.    4
  4.    3
 Discuss Question
Answer: Option D. -> 3
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 18. Groups contain alkaline earth metals are
  1.    IA
  2.    IIIA
  3.    IIA
  4.    IVA
 Discuss Question
Answer: Option C. -> IIA
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 19. The value of ionization energy
  1.    decreases down the group
  2.    increases down the group
  3.    remains same down the group
  4.    decreases in period
 Discuss Question
Answer: Option A. -> decreases down the group
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 20. When an electron is added in the valence shell than
  1.    energy is absorbed
  2.    energy is released
  3.    energy remains same
  4.    force of attraction increases
 Discuss Question
Answer: Option B. -> energy is released
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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