Question

Dmitri Mendeleev was unable to assign the correct position to which element?

Asked in SSC MTS · 2026
Genesis of Periodic Classification · Chemistry
Exam PYQ4 Options
ChemistryClassification of Elements and Periodicity in PropertiesGenesis of Periodic ClassificationSSC MTS2026
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The modern periodic table arranges elements by increasing atomic number.

Correct AnswerCorrect option for this question
Option B — Hydrogen

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Questions Asked from Mendeleev Periodic Table in Previous Exams

See how often Mendeleev Periodic Table has appeared in previous-year questions across major government exams.

High Exam Frequency
7UPSC Questions Asked in These Years:2010, 2011, 2012, 2013, 2019, 2020, 2024
8SSC Questions Asked in These Years:2017, 2019, 2020, 2021, 2022, 2023, 2024, 2025
7Railways Questions Asked in These Years:2016, 2018, 2021, 2022, 2024, 2025, 2026
13State PSC Questions Asked in These Years:2002, 2004, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
Mendeleev Periodic Table has appeared in 35 previous-year exam questions, most frequently in State PSC, SSC and UPSC.
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