Explanation: If an atom's outermost shell is full, it is less inclined to shed or gain an electron from another atom, making it very stable. Conversely, if the outer shell is occupied by just one solitary electron (ie sodium) this electron can readily be shared with another atom, making it highly reactive.

Which element is chemically more reactive?

The most reactive elementary group is alkali metals (situated far apart from intermediate metals and noble gases). Cesium is second from the bottom of this group, has 6 shells of electrons, and it matches the features of a reactive atom, making it the most reactive element.

Which element is more reactive and why?

Alkali metals (situated far away from transitional metals and noble gases) are the most reactive elemental group. Cesium is second from the bottom of this group, with 6 electron shells, so it fits all the characteristics of a reactive atom, therefore making it the most reactive element.

Which substance is most reactive?

Among the halogens, fluorine, chlorine, bromine, and iodine, fluorine is the most reactive one. It forms compounds with all other elements except the noble gases helium (He), neon (Ne) and argon (Ar), whereas stable compounds with krypton (Kr) and xenon (Xe) are formed.

Why a compound is more reactive?

The bond formed between the two similar halogens are more stable than the bond formed in between the dissimilar halogen atoms, this results in the more reactive of the interhalogen compounds than the individual halogen compounds. ... So, the compounds which bond can be easily broken, they are more reactive.

Trends in the Periodic Table — Reactivity!

Why some metals are more reactive?

Reactivity Series

Metal ions are positively charged as they lose negative electrons. Some metals give up their electrons more readily than others and are, therefore, more reactive.

Where is the most reactive element?

The elements toward the bottom left corner of the periodic table are the metals that are the most active in the sense of being the most reactive. Lithium, sodium, and potassium all react with water, for example.

Which is more reactive iron or copper?

Complete answer:

Copper is less reactive than iron. Since, according to the atomic structure, iron has four unpaired shells in its three sub shells, while copper only has one electron. As a result, iron can react faster than copper.

Which elements are most reactive and least reactive?

• The most reactive element is fluorine, the first element in the halogen group.
• The most reactive metal is francium, the last alkali metal (and most expensive element). ...
• The least reactive elements are the noble gases.

Why do more reactive metals displace less reactive metals?

Displacement Reactions

A more reactive metal (one that forms positive ions more easily) can displace a less reactive metal from a compound. This is called a displacement reaction. A metal can only displace another metal from a compound if it is located above it in the reactivity series.

Which is highly reactive metal?

- So, out of given metals, Potassium is the most reactive metal. Therefore, potassium is the most reactive metal among the given options.

Which of the two elements will be chemically more reactive?

Hence the Z is more electronegative element (i.e tendency to gain electron) hence will be more reactive than X.

Why are some chemicals more reactive than others?

An element's reactivity depends on how its electrons are arranged. Conversely, if the outer shell is occupied by just one solitary electron (ie sodium) this electron can readily be shared with another atom, making it highly reactive. ...

What is chemical reactivity of elements?

Reactivity is a measure of how easily an element will combine with other elements to form compounds. ... The size of the nucleus determines the chemical reactivity of the element due to its ability to hold onto electrons and attract electrons.

What does chemical reactivity mean for metals?

The reactivity series of metals is a chart listing metals in order of decreasing reactivity. In general, the more reactive a metal is: the more vigorously it reacts with other substances. the more easily it loses electrons to form positive ions (cations)

Which is more reactive hydrogen or copper?

As we can see that in this option, the first metal that is copper is below that hydrogen in the reactivity series so, copper is less reactive than hydrogen and the second metal that is tin is placed above the hydrogen in the reactivity series, so tin is more reactive than hydrogen.

Which is more reactive zinc or copper?

The metals that form positive ions by losing electrons more readily. A more reactive metal displaces a less reactive metal from salt solution. ... Therefore, zinc is more reactive than copper.

Why some metals are more reactive than hydrogen?

Some elements Have more electronagativity Than hydrogen. So they More reactive than hydrogen in other elements.

What is more reactive magnesium or copper?

For example, magnesium is more reactive than copper.

Which is more reactive O or S?

Explanation: oxygen is only more reactive than sulphur because due to small atomic size oxygen atom has high tendency to attract the electrons ( more electronegative .

Which element is more reactive than other?

Hydrogen is a very reactive gas, and the alkali metals are even more reactive. In fact, they are the most reactive metals and, along with the elements in group 17, are the most reactive of all elements.

Which atoms are the most reactive?

Fluorine and oxygen are the most reactive elements of the Periodic Table, i.e. this is another way of saying that they are the most reactive of ALL ELEMENTS.

Which of the two elements would be more reactive S or Ar and why?

Element Z of atomic number which is Sulphur is more reactive than Element X which is Argon. Because Argon is inert gas which donot reacts with other atoms. But Sulphur is active which wants to attain its octet in its valence shell.