✓ Board-verified
Science · 2022 · 2 marks
CBSE 2022 · Region 4 · Set 2 · Q7
State Modern Periodic Law. How many rows and columns are there in the Modern Periodic Table?
State Modern Periodic Law. How many rows and columns are there in the Modern Periodic Table ?
Marking-scheme solution
Properties of elements are a periodic function of their atomic number
'$\displaystyle 18$' vertical columns called groups
'$\displaystyle 7$' horizontal rows are known as periods
All Periodic Classification of Elements questions2022 question paperPractice Periodic Classification of Elements →
More from Periodic Classification of Elements
- In the modern periodic table, compare the tendency of the elements to lose electrons while moving (i) down a group, and (ii) from left to right in a…2022
- An element 'M' has 25\% of the electrons filled in the third shell as in the second shell. The element ' M ' is:2025
- State the criteria used by Mendeleev for creating his Periodic Table. Compare the position of isotopes of elements in the Mendeleev's Periodic Table…2022
- In the following table, some elements have been arranged in a certain pattern: Identify the periodic law with which the given table is associated.…2022
- Give the criteria on the basis of which elements are placed (i) in a group and (ii) in a period in the modern periodic table. The atomic number of an…2022
- State Newland Law of Octaves. 1+1+1/2+1 1/2=3 With an example, explain Dobereiner's Triads. List one limitation each of both the attempts mentioned…2022
- Name the elements whose compounds formed the basis of classification in Mendeleev's periodic table. Why did Mendeleev choose these elements? How the…2022
- State Newland Law of Octaves. 1+1+1/2+1/2=3 With an example, explain Dobereiner's Triads. List one limitation each of both the attempts mentioned in…2022
CBSE Class 10 Science past-paper question from the 2022 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.