Question

Write 3 cause of periodicity.​

Answer 1

Answer:

The cause of periodicity of properties of elements is due to the repetition of similar electronic configuration of their atoms in the outermost energy shell after certain regular interval.

Answer 2

Causes of periodicity :

Similarity in the electronic configuration of valence shell of elements is the main cause of periodicity. Atomic number is the fundamental property of the elements. Similar elements are repeated at a regular interval When they arranged in the Increasing order of their atomic Number.