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Classification of Elements and Periodicity in Properties

Previous year questions with solutions · 2000 – 2026

42Questions
28Papers covered
4.44%Weightage 2026same as last year
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Year-wise statistics questions · papers · average per paper · weightage
YearQuestionsPapersAvg / paperWeightage
20264224.44% same as last year
20252124.44% ▲ 11.1% vs last year
20244224.00% ▲ 104% vs last year
20231111.96% ▼ 34% vs last year
2022321.52.97% ▼ 33.2% vs last year
20202124.44% ▲ 100% vs last year
20191112.22% same as last year
20171112.22% ▲ 100% vs last year
2016120.51.11% ▼ 50% vs last year
20152212.22% same as last year
20141112.22% ▲ 97.8% vs last year
2013120.51.12% ▼ 10.1% vs last year
2012120.51.25% ▼ 49.4% vs last year
20112212.47% ▼ 50.6% vs last year
20104225.00% ▲ 155% vs last year
20091111.96% ▼ 51% vs last year
20072124.00% ▲ 100% vs last year
20061112.00% ▼ 50% vs last year
20052124.00% ▲ 92% vs last year
20041112.08% ▲ 2.1% vs last year
20031112.04% ▼ 66% vs last year
20023136.00% ▲ 206% vs last year
20011111.96%

38 questions · newest paper first · page 2 of 2

Ques. 31AIPMT 2005

Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species ?

  1. S < O < Cl < F
  2. Cl < F < S < O
  3. F < Cl < O < S
  4. O < S < F < Cl
Ques. 32AIPMT 2005

A nuclide of an alkaline earth metal undergoes radioactive decay by emission of three -particles in succession. The group of the periodic table to which the resulting daughter element would belong is

  1. Gr. 13
  2. Gr. 17
  3. Gr. 14
  4. Gr. 16
Ques. 33AIPMT 2004

Ionic radii are

  1. inversely proportional to effective nuclear charge
  2. inversely proportional to square of effective nuclear charge
  3. directly proportional to effective nuclear charge
  4. directly proportional to square of effective nuclear charge.
Ques. 34AIPMT 2003

The ions O2-, F-, Na+, Mg2+ and Al3+ are isoelectronic. Their ionic radii show

  1. a significant increase from O2- to Al3+
  2. a significant decrease from O2- to Al3+
  3. an increase from O2- to F- and then decrease from Na+ to Al3+
  4. a decrease from O2- to F- and then increase from Na+ to Al3+
Ques. 35AIPMT 2002

Which of the following is isoelectronic?

  1. CO2, NO2
  2. NO2-, CO2
  3. CN-, CO
  4. SO2, CO2
Ques. 36AIPMT 2002

Which of the following order is wrong?

  1. NH3 < PH3 < AsH3 – acidic
  2. Li < Be < B < C – 1st IP
  3. Al2O3 < MgO < Na2O < K2O – basic
  4. Li+ < Na+ < K+ < Cs+ – ionic radius
Ques. 37AIPMT 2002

An atom has electronic configuration 1s2 2s2 2p6 3s2 3p6 3d3 4s2, you will place it in which group?

  1. fifth
  2. fifteenth
  3. second
  4. third
Ques. 38AIPMT 2001

Correct order of 1st ionization potential among following elements Be, B, C, N, O is

  1. B < Be < C < O < N
  2. B < Be < C < N < O
  3. Be < B < C < N < O
  4. Be < B < C < O < N