Home › ICSE Class 9 › chemistry › The Periodic Table › Which property determines the position of an ele…
Which property determines the position of an element in the periodic table?
AMass number
BNumber of neutrons
CDensity
DAtomic number
Answer & Solution
Correct answer: A. Mass number
1. The modern periodic law uses atomic number as the basis.
2. Elements with the same atomic number are the same element.
3. Position depends on electron configuration determined by atomic number.
4. So atomic number determines the position.
_Source: Selina Concise Chemistry ICSE Class 9, Ch 5 'The Periodic Table'_
Related questions
Which 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?Why are alkali metals stored under kerosene?Which is the lightest noble gas?Which property of an element shows the greatest periodic change?Which element is in period 2 and group 14?