Same chapter1 markDifficulty: Easy
Across a period from left to right, the atomic size:
Periodic Properties and Variations of Properties
2 marksDifficulty: Easy
State the modern periodic law.
Original Khojo Papers practice question — not from a past board paper.
Answer
The properties of elements are a periodic function of their atomic numbers.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Mendeleev's original law used atomic mass, which left several pairs of elements out of order; using atomic number removed those anomalies.
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Periodic Properties and Variations of Properties
Same chapter1 markDifficulty: Easy
On moving from left to right across a period in the modern periodic table, the atomic size generally:
Periodic Properties and Variations of Properties
Same chapter3 marksDifficulty: Medium
Define electron affinity and electronegativity, and state how each varies down a group.
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