Question

Explain why physical properties change down the group and what are group trends?​

Answer 1

Answer:

Explanation:

As we move down the group the atomic number increases and there is an addition of extra shells of electrons, these increase the atomic size and mass drastically. Therefore, the physical properties of these elements remain the same. But since they have the equal number of unpaired electrons in the outer shell down the group they show similar chemical reactive properties.

Answer 2

Answer:

physical properties change down the group because of that when we go down the group their is change in atomic and mass number and valence electrons . By octate rule it was clarified that at every 8 th element it varies but it was failed , because of the valence electrons it varies.