Question
Which of the following symbols is used for the element phosphorus as per the rules for atomic symbols?
Asked in RRB Group D · 2026
Nomenclature of Elements · Chemistry
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Atomic radius generally decreases across a period and increases down a group.
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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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