what is importance of valency
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Valence electrons are the electrons in the outermost energy level of an atom — in the energy level that is farthest away from the nucleus. When chemists study chemical reactions, they study the transfer or sharing of electrons.
The electrons that are more loosely held by the nucleus (the valence electrons, those furthest away from the nucleus) are the ones that are gained, lost, or shared.
Electrons are negatively charged, while the nucleus has a positive charge due to the protons. The protons attract and hold the electrons, but the farther away the electrons are, the less the attractive force.
Chemists really only consider the electrons in the s and p orbitals in the energy level that is currently being filled as valence electrons.
In the electron configuration for oxygen (shown below), energy level 1 is filled, and there are 2 electrons in the 2s orbital and 4 electrons in the 2p orbital for a total of 6 valence electrons. Those valence electrons are the ones lost, gained, or shared.
The electrons that are more loosely held by the nucleus (the valence electrons, those furthest away from the nucleus) are the ones that are gained, lost, or shared.
Electrons are negatively charged, while the nucleus has a positive charge due to the protons. The protons attract and hold the electrons, but the farther away the electrons are, the less the attractive force.
Chemists really only consider the electrons in the s and p orbitals in the energy level that is currently being filled as valence electrons.
In the electron configuration for oxygen (shown below), energy level 1 is filled, and there are 2 electrons in the 2s orbital and 4 electrons in the 2p orbital for a total of 6 valence electrons. Those valence electrons are the ones lost, gained, or shared.
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Valency is the combining capacity of an atoms.
The importance of valency:
when two atom react each other,it is their outer shell that come into contact first and it is therefore the electron on outer shell that are normall involved in chemical reaction.
In chemical reaction the atoms exchange the valence electrons to stabilise their valence shell . With out valence shell the chemical reaction won't occur
The importance of valency:
when two atom react each other,it is their outer shell that come into contact first and it is therefore the electron on outer shell that are normall involved in chemical reaction.
In chemical reaction the atoms exchange the valence electrons to stabilise their valence shell . With out valence shell the chemical reaction won't occur
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