florine
Yes, fluorine is the most reactive element on the periodic table.
yes, it is a non metal and it is placed on the right side of the Periodic Table, reactivity increases from left to right on the periodic table. since selenium is in group 16 out of 18 groups, it is a very reactive element. hope this helps you!
The lower left (Cesium) ones and the upper right's(Fluorine).
This element is francium in the first group of periodic table.
yes
Cs (Caesium) is the most reactive!!!!
group 1
Potassium (K) is an element. It is available on the periodic table of elements.
The reactivity of an element can be determined by observing its tendency to undergo chemical reactions. Elements higher up in the periodic table tend to be more reactive than those lower down. Additionally, elements that are further to the left of the periodic table are typically more reactive than those to the right.
i have know idea but i think
An element below phosphorus in the periodic table would be expected to be more reactive. For example, sulfur is below phosphorus in the periodic table and is more reactive.
Elements become less reactive as you move from left to right across the periodic table. This is due to how many valence electrons (outer-most electrons) the element has; the less valence electrons, the more reactive the element.