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Periodic Classification

Comprehensive quiz covering periodic table classification, trends across periods and groups, electronic configurations, and historical development including Dobereiner's triads, Law of Octaves, and Mendeleev's periodic table.

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following properties does not increase while going down a group?

  1. Electronegativity
  2. Atomic mass
  3. Atomic size
  4. Atomic number
  5. Metallic character
Question 2 Multiple Choice (Single Answer)

Which of the following elements exhibits the maximum number of valence electrons?

  1. Li
  2. Cl
  3. P
  4. Mg
  5. Si
Question 3 Multiple Choice (Single Answer)

The number of elements in the first period of the periodic table is __________.

  1. two
  2. four
  3. one
  4. eight
  5. seven
Question 4 Multiple Choice (Single Answer)

Where is the element with electronic configuration 2, 8, 7 placed in the modern periodic table?

  1. Group 7
  2. Group 15
  3. Group 5
  4. Group 17
  5. Group 13
Question 5 Multiple Choice (Single Answer)

Which of the following statements is/are correct about the modern periodic table?

  1. It has 8 vertical columns known as groups.
  2. It has 7 horizontal rows known as periods.
  3. It has 18 vertical columns known as groups.
  4. Both 1 and 2
  5. Both 2 and 3
Question 6 Multiple Choice (Single Answer)

Which among the following is a transition element?

  1. Sb
  2. Sn
  3. Sc
  4. Sr
  5. Se
Question 7 Multiple Choice (Single Answer)

Which of the following metals has the lowest melting point?

  1. Mg
  2. Be
  3. Ca
  4. Ba
  5. Sr
Question 8 Multiple Choice (Single Answer)

To which period do the elements Al, Si, P and S belong?

  1. Period 2
  2. Period 3
  3. Period 4
  4. Period 5
  5. Period 6
Question 9 Multiple Choice (Single Answer)

Identify the Dobereiner's triad.

  1. Ca, Sr, Be
  2. F, Br, At
  3. Na, Li, Mg
  4. Cl, Br, I
  5. Li, Na, Cs
Question 10 Multiple Choice (Single Answer)

The Law of Octaves was found to be applicable up to element having atomic mass __________.

  1. 20
  2. 36
  3. 40
  4. 51
  5. 56
Question 11 Multiple Choice (Single Answer)

According to the Mendeleev’s periodic table, eka-boron was later found to be __________.

  1. gallium
  2. scandium
  3. thallium
  4. germanium
  5. polonium
Question 12 Multiple Choice (Single Answer)

Which of the following gives the correct increasing order of the atomic radii of Si, S and P?

  1. P, Si, S
  2. Si, P, S
  3. S, P, Si
  4. S, Si, P
  5. Si, S, P
Question 13 Multiple Choice (Single Answer)

What type of oxide would eka-silicon form?

  1. RO
  2. R2O3
  3. RO2
  4. RO3
  5. R2O5
Question 14 Multiple Choice (Single Answer)

To which family of elements does Astatine belong?

  1. Noble gases
  2. Halogens
  3. Alkali metals
  4. Transition metals
  5. Lanthanides
Question 15 Multiple Choice (Single Answer)

Which of the following pair of elements belong to the same group?

  1. Mn and Ni
  2. Si and P
  3. Cu and Ag
  4. Al and Ge
  5. Au and Hg
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