Question
Consider the following statements regarding the size of an atom.
Statement 1: The size of an atom is approximately in the range of 0.1 nm to 0.5 nm.
Statement 2: Atomic size increases as we move from left to right in a period of the periodic table.
Statement 3: The radius of a hydrogen atom is about 10⁻¹⁰ meters.
Which of the above statements is/are correct?
Asked in RRB Technician Grade III · 2026
Modern Periodic Table · Chemistry
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Mendeleev arranged elements mainly by atomic mass and recurring properties.
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Modern Periodic Table: Groups, Periods & Blocks has appeared in 43 previous-year exam questions, most frequently in UPSC, State PSC and SSC.
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