Question

What are the important features of elements in a group?​

Answer 1

Answer:

Valence electrons, valency, atomic size, ionization energy, metallic character, electron-positivity, electron-negativity and reactivity are the characteristics of groups. The atomic radius of the element (i.e. atomic size) lying in a group increases as we go up from top to bottom in a group.

Answer 2

Answer:

The elements in a group have similar physical or chemical characteristics of the outermost electron shells of their atoms (i.e., the same core charge), because most chemical properties are dominated by the orbital location of the outermost electron.