alleryStart learning →Which property of an element shows the greatest periodic change?
AAtomic radius
BDensity
CBoiling point
DMass number
Answer & Solution
Correct answer: A. Atomic radius
1. Atomic radius shows clear, regular variation along periods and groups.
2. Density and boiling point vary less predictably.
3. Mass number is not periodic at all.
4. So atomic radius is the most clearly periodic property.
_Source: Selina Concise Chemistry ICSE Class 9, Ch 5 'The Periodic Table'_
Keep practising The Periodic Table
Browse all The Periodic Table questions for ICSE Class 9, or explore more Chemistry topics.
Related questions
Pick the bigger atom each roundMatch element families to an examplePop the Group 1 metals onlyWhich element does NOT exist in nature?In the modern periodic table, transition elements occupy:Diagonal relationship is shown between:Which family of elements is highly UNreactive?Which property determines the position of an element in the periodic table?