Same chapter3 marksDifficulty: Medium
State two advantages of the modern periodic table over Mendeleev's table.
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3 marksDifficulty: Medium
An element X has an atomic number of 16. Write its electronic configuration, its group and period, and the formula of its compound with hydrogen.
Original Khojo Papers practice question — not from a past board paper.
Answer
The configuration is 2, 8, 6; it is in period 3 and group 16; and its hydride is H2X.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Six valence electrons mean a valency of 2 towards hydrogen.
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