Which properties increase when moving down a group of the periodic table? select all that apply. reactivity valence electrons atomic radii atomic mass

Atomic Mass.

Reactivity decreases as you go down a group.

Atomic Radius also decreases as you go down a group.

Valence electrons are the same within a group.

Atomic mass, however, increases as you go down a group.

Hope this helps!

Explanation:

When we move down a group then there will be increase in number of shells present in an atom. Due to this there will be increase in atomic radii of the atom.

As a result, there will be increase in atomic mass of the atom also. Whereas reactivity of metals increases on moving down the group as the valence shell moves away from the nucleus. So, it becomes easy for the metal atom to lose an electron.

On the other hand, reactivity of non-metals decreases on moving down the group.

So, we can conclude that properties increase when moving down a group of the periodic table are atomic radii and atomic mass.

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.