Periodic Classification of Elements Class 10 Important Questions Pdf - 1

Question: 1

The chemical name of rust is _____

Question: 2

The chief ore of Aluminium is _____

Question: 3

____ is the longest period in the periodical table.

Question: 4

_____ forms the basis of modern periodic table.

Question: 5

_____ and _____ are called inner transition elements.

Question: 6

Across the period, ionic radii ____

Question: 7

If the electronegativity difference between two bonded atoms in a molecule is greater than 1.7, the nature of bonding is _____

Question: 8

The scientist who propounded the modern smallest one in size is _____