Examples for the groups I an II of the periodic table:- the atomic radius grows from top to bottom- the electronegativity descends from top to bottom
As I understand it scientists took an educated guess at the Hydrogen Atom and all the rest were extrapolated from there.
In general, moving down the middle of the periodic table results in a decrease in reactivity for transition metals. This is because as you move down a group, the valence electrons are further away from the nucleus, making it harder for the atom to lose or gain electrons and therefore lowering its reactivity.
Having a low chemical reactivity gold is useful to made very resistant objects and platings.
The reactivity increases with increasing numbers of electron shells (energy levels).
Because Gold (Au) is very unreactive, it is placed at the very bottom of the reactivity series with the exception of platinum.
Reactivity generally increases as you move from right to left across a period and from top to bottom down a group on the periodic table. This is because elements on the left side of the table have fewer electrons in their outer shell, making them more likely to lose electrons and react with other elements.
Decrease reactivity
Examples for the groups I an II of the periodic table:- the atomic radius grows from top to bottom- the electronegativity descends from top to bottom
The cheap metal r ing from a vendor is more than gold in reactivity
As I understand it scientists took an educated guess at the Hydrogen Atom and all the rest were extrapolated from there.
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Reactivity of metals decreases from left to right in the specific period of theperiodic table.
Periodic Table - Or Table of Reactivty
Right at the bottom.
Reactivity of metals decreases from left to right in the specific period of theperiodic table.
Reactivity of metals decreases from left to right in the specific period of theperiodic table.