On which factors of element does reactivity series depends.?

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Answer

Firstly it depends on the number of  electrons present in the outermost orbit and secondly it depends on its size(greater the size of element reactive the most)

Answer

Factors Affecting Reactivity Series

The reactivity series is a list of elements arranged in order of their ability to displace other elements from their compounds. It is a very important concept in chemistry and is used to predict how different elements will react with each other. The reactivity series depends on various factors, some of which are listed below:

1. Electronic Configuration

The electronic configuration of an element determines the number and arrangement of electrons in its outermost shell. This, in turn, determines the ease with which the element can lose or gain electrons. Elements with a low ionization energy (i.e., those that can easily lose electrons) tend to be more reactive than those with a high ionization energy.

2. Electronegativity

Electronegativity is the ability of an atom to attract electrons towards itself. Elements with a high electronegativity tend to be less reactive because they are less likely to give up electrons. Conversely, elements with a low electronegativity tend to be more reactive because they are more likely to give up electrons.

3. Atomic Size

The size of an atom also affects its reactivity. Generally, larger atoms are less reactive than smaller ones because they have more electrons and are therefore less likely to lose or gain electrons.

4. Valency

Valency refers to the number of electrons an atom can gain, lose, or share to form a chemical bond. Elements with a higher valency tend to be more reactive because they can form more bonds with other elements.

Conclusion

In conclusion, the reactivity series depends on various factors such as electronic configuration, electronegativity, atomic size, and valency. These factors determine the ease with which an element can lose or gain electrons and therefore its reactivity.

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