The number of electrons in the outermost shell of an element is 5. What is its valency and why?
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if the no. of electrons in outermost shell are five. For becoming stable, it can
! gain 3 electrons to comp. 8 electrons in outermost shell or
! loose 5 electrons.
Bt loosing 5 electrons will take so much energy as compared to gain 3 electrons. So, it will gain 3 electrons.
So valency of element = -3
Hope it may help u....
! gain 3 electrons to comp. 8 electrons in outermost shell or
! loose 5 electrons.
Bt loosing 5 electrons will take so much energy as compared to gain 3 electrons. So, it will gain 3 electrons.
So valency of element = -3
Hope it may help u....
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