Define valency by taking example of silicon and oxygen.
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The number of electrons gained, lost or shared so as to complete the octet of electrons in valence shell is called valency.
Valency of silicon: It has electronic configuration → 2,8.4
Thus, 4 electrons are shared with other atoms to complete the octet and so its valency = 4
Valency of oxygen : It has electronic configuration →2,6
Thus, It will gain 2 electrons to complete its octet. So its valency = 2
hope it helps you
The number of electrons gained, lost or shared so as to complete the octet of electrons in valence shell is called valency.
Valency of silicon: It has electronic configuration → 2,8.4
Thus, 4 electrons are shared with other atoms to complete the octet and so its valency = 4
Valency of oxygen : It has electronic configuration →2,6
Thus, It will gain 2 electrons to complete its octet. So its valency = 2
hope it helps you
Answered by
4
Valency of an element is defined as its capacity to combine with other elements.
Si has valency of 4, as its outer most cell have 4 electrons.
O has 2 valency, as its outermost cell have 6 electrons.
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