Same chapter3 marksDifficulty: Medium
Describe the Solvay process for the manufacture of sodium carbonate in outline.
s-Block Elements
3 marksDifficulty: Medium
Why is lithium anomalous among the alkali metals, and which element does it resemble?
Original Khojo Papers practice question — not from a past board paper.
Answer
Lithium has an exceptionally small size and high charge density, and no d orbitals available. Its compounds are therefore more covalent and less soluble than those of the other alkali metals, and it is the only one that forms a nitride and gives the normal oxide on burning. It resembles magnesium, the element diagonal to it in the table.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
This diagonal relationship arises from the similar charge-to-radius ratios.
Related questions
From the same topic and chapter, at a similar level.
Same chapter3 marksDifficulty: Medium
Why do the alkali metals impart a characteristic colour to a flame?
s-Block Elements
Same chapter3 marksDifficulty: Medium
Explain why the alkali metals are strong reducing agents and why their reactivity increases down the group.
s-Block Elements
Same subject3 marksDifficulty: Medium
A compound contains 40% carbon, 6.7% hydrogen and 53.3% oxygen. Its molar mass is 180 g. Find its empirical and molecular formulae.
Some Basic Concepts of Chemistry
Same subject3 marksDifficulty: Medium
State Hund's rule and the Aufbau principle.
Structure of Atom
Same subject3 marksDifficulty: Medium
State the four quantum numbers and what each describes.
Structure of Atom