List of top Science Questions on Periodic Classification of Elements asked in Bihar Board X

What do you understand by short and long periods of periodic table ?
Magnesium is a member of which group of the periodic table ?
How many periods are there in the periodic table ?
Which was a defect of Mendeleev's periodic table ?
Who among the following propounded the laws of octave ?
Which of the following compounds would be the most basic ?
Silicon is a/an
The valency of all elements in a group of the periodic table is:
What is the number of elements in the third group of the periodic table?
The atomic number of gold is:
On moving from right to left across the period of the modern periodic table, the atomic size:
The atomic number of sodium is:
The atomic number of magnesium is 12. What is its valency?
The atomic number of sodium is:
On moving from right to left across the period of the modern periodic table, the atomic size:
What is the number of elements in the third group of the periodic table?
The valency of all elements in a group of the periodic table is:
The atomic number of gold is:
Boron and aluminium belong to which group of elements in periodic table?
The atomic number of potassium is 19. What is the valency?
What is the atomic number of fluorine?