Fluorine (F). It has the highest electron affinity which essentially means it is the most willing to gain an electron. Fluorine is also the MOST reactive element on the periodic table.
Key to remember, as you go from left to right across the Periodic Table, the activity increases. As you go from top to bottom the activity decreases.
Halogens are very reactive: F, Cl, Br, I.
The f-block elements in period 7 are known as the actinides.
The most electronegative elements are found in the top right corner of the Periodic Table (excluding inert gases). So they are: Boron - B Carbon - C Nitrogen - N Oxygen - O Fluorine - F Fluorine is the most electronegative element.
Elements dont react to form other elements. However, compounds can react with one another or decompose to form elements. More importantly, fluorine is a diatomic molecule, which means that it will never exist as "F" but always as F2.
Generally the noble gases, however xenon (Xe) has been found to create compounds with other elements, most often with F in XeF8
Fluorine is the most reactive.
Group III-B or 4th, it includes 4 elements of 'd' block and all the 28 elements of 'f' block.
The most active nonmetal element is fluorine.
The halogens are are the most active nonmetals. There're 5 non-metallic elements in the halogen family. The term "halogen" means "salt-former" & compounds containing halogens are called "salts".They are: Fluorine, Chlorine, Bromine, Iodine & Astatine
lithium (Li)
b flat, d flat, f, and g
No. In general, a function f (from set A to set B) has an inverse if, for any elements a and b in A [f(a) and f(b) in B], f(a) = f(b) imples that a = b. Strictly speaking then, y = x2 does not have an inverse because each value of x2 (except 0) maps on to 2 distinct values of y. This does not accord with the definition of a function. For example, f(-2) = f(2) = 4 but -2 is not 2 so sqrt is technically NOT a function.
The most active metal is francium (Fr). It is located farthest to the left and at the bottom. The most active nonmetal is fluorine (F). It is located at the top of Group 17 (the halogens).
fluorine (F)
There are total of 744 numbers f B-52 built and only 85 are active and 9 are reserved currently.
a a a a a d c g a b a a a a a d c g a b c d e g a d e b a d
Sets contain elements. The intersection of sets (represented by an upside-down 'U') is the list of elements that are common in both sets. The union of sets (represented by 'U') is the list of all the elements in the relevant sets. E.g. If A={a,b,c,d,e,f} and B={a,e,i,o,u}: The intersection of A and B is {a,e}. The union of A and B is {a,b,c,d,e,f,i,o,u} (notice how repeating elements, e.g. 'a' and 'e', are only listed once even though they occur in both sets.)