Same chapter3 marksDifficulty: Medium
Explain the formation of a molecule of methane, naming the type of bond.
Atomic Structure and Chemical Bonding
3 marksDifficulty: Medium
Explain the formation of a molecule of sodium chloride, naming the type of bond formed.
Original Khojo Papers practice question — not from a past board paper.
Answer
A sodium atom (2, 8, 1) transfers its single outermost electron to a chlorine atom (2, 8, 7). Sodium becomes Na+ with the configuration 2, 8 and chlorine becomes Cl− with 2, 8, 8. The oppositely charged ions attract each other electrostatically, forming an electrovalent or ionic bond.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Both ions have attained the stable configuration of a noble gas.
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