Same chapter3 marksDifficulty: Medium
An element X has atomic number 12. Write its electronic configuration, its group and the formula of its chloride.
Periodic Properties and Variations of Properties
3 marksDifficulty: Medium
How does metallic character vary across a period and down a group, and why?
Original Khojo Papers practice question — not from a past board paper.
Answer
Metallic character decreases across a period, because the ionisation potential rises and atoms lose electrons less readily. It increases down a group, because the atoms grow larger, the outermost electrons are held less firmly and are lost more easily.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
This is why the most metallic elements sit at the bottom left of the table and the most non-metallic at the top right.
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